diff --git a/src/components/Season/SeasonCard.tsx b/src/components/Season/SeasonCard.tsx
index 511aaa34d2f5ac29063c4adf6056c41276d6efe3..a989d17118a6d7694b0005e6da0fba9a887f225b 100644
--- a/src/components/Season/SeasonCard.tsx
+++ b/src/components/Season/SeasonCard.tsx
@@ -9,33 +9,33 @@ import SeasonCardUnlocked from './SeasonCardUnlocked'
 import './season.scss'
 
 interface SeasonCardProps {
-  season: UserSeason
+  userSeason: UserSeason
   indexSlider: number
   index: number
   cardWitdh: number
 }
-const SeasonCard = ({
-  season,
+const SeasonCard: React.FC<SeasonCardProps> = ({
+  userSeason,
   indexSlider,
   index,
   cardWitdh,
 }: SeasonCardProps) => {
   const renderCard = () => {
-    const { state } = season
+    const { state } = userSeason
 
     switch (state) {
       case UserSeasonState.LOCKED:
-        return <SeasonCardLocked season={season} />
+        return <SeasonCardLocked userSeason={userSeason} />
       case UserSeasonState.UNLOCKED:
-        return <SeasonCardUnlocked season={season} />
+        return <SeasonCardUnlocked userSeason={userSeason} />
       case UserSeasonState.DONE:
-        return <SeasonCardDone season={season} />
+        return <SeasonCardDone userSeason={userSeason} />
       case UserSeasonState.ONGOING:
-        return <SeasonCardOnGoing season={season} />
+        return <SeasonCardOnGoing userSeason={userSeason} />
       case UserSeasonState.BOSS:
-        return <SeasonCardBoss season={season} />
+        return <SeasonCardBoss userSeason={userSeason} />
       default:
-        return <SeasonCardLocked season={season} />
+        return <SeasonCardLocked userSeason={userSeason} />
     }
   }
   return (
diff --git a/src/components/Season/SeasonCardBoss.tsx b/src/components/Season/SeasonCardBoss.tsx
index bd5a764a26970d2cae0ca30850183fda2ecb46d8..1be2373ba2e7b4fe1a9b6a5233053884b60af1fb 100644
--- a/src/components/Season/SeasonCardBoss.tsx
+++ b/src/components/Season/SeasonCardBoss.tsx
@@ -1,11 +1,13 @@
-import { UserSeason } from 'models'
 import React from 'react'
 import './season.scss'
+import { UserSeason } from 'models'
 
 interface SeasonCardBossProps {
-  season: UserSeason
+  userSeason: UserSeason
 }
-const SeasonCardBoss = ({ season }: SeasonCardBossProps) => {
+const SeasonCardBoss: React.FC<SeasonCardBossProps> = ({
+  userSeason,
+}: SeasonCardBossProps) => {
   return <></>
 }
 
diff --git a/src/components/Season/SeasonCardDone.tsx b/src/components/Season/SeasonCardDone.tsx
index d3f531e50cd81706eb112dd2b421014883976b12..008311b7d0fb3b3f30b421bcd5f69236cc742b1c 100644
--- a/src/components/Season/SeasonCardDone.tsx
+++ b/src/components/Season/SeasonCardDone.tsx
@@ -1,12 +1,14 @@
-import { UserSeason } from 'models'
 import React from 'react'
 import './season.scss'
+import { UserSeason } from 'models'
 
 interface SeasonCardDoneProps {
-  season: UserSeason
+  userSeason: UserSeason
 }
 
-const SeasonCardDone = ({ season }: SeasonCardDoneProps) => {
+const SeasonCardDone: React.FC<SeasonCardDoneProps> = ({
+  userSeason,
+}: SeasonCardDoneProps) => {
   return <></>
 }
 
diff --git a/src/components/Season/SeasonCardLocked.tsx b/src/components/Season/SeasonCardLocked.tsx
index 0767a59b81e4d47059698ace92eee454c8ca794d..d79453ceb777b33113d72b37a0776b72961140e8 100644
--- a/src/components/Season/SeasonCardLocked.tsx
+++ b/src/components/Season/SeasonCardLocked.tsx
@@ -1,15 +1,17 @@
-import { UserSeason } from 'models'
 import React from 'react'
 import './season.scss'
+import { UserSeason } from 'models'
 
 interface SeasonCardLockedProps {
-  season: UserSeason
+  userSeason: UserSeason
 }
-const SeasonCardLocked = ({ season }: SeasonCardLockedProps) => {
+const SeasonCardLocked: React.FC<SeasonCardLockedProps> = ({
+  userSeason,
+}: SeasonCardLockedProps) => {
   return (
     <div className="cardContent">
       <p className="title">Saison</p>
-      <span className="seasonTitle">{season.title}</span>
+      <span className="seasonTitle">{userSeason.title}</span>
       <span>Locked</span>
     </div>
   )
diff --git a/src/components/Season/SeasonCardOnGoing.tsx b/src/components/Season/SeasonCardOnGoing.tsx
index 6f1309797d97369efe20556e69a792be790deff0..dd6d345f8b83b627f769f184c17461f0e025f67b 100644
--- a/src/components/Season/SeasonCardOnGoing.tsx
+++ b/src/components/Season/SeasonCardOnGoing.tsx
@@ -1,15 +1,17 @@
-import { UserSeason } from 'models'
 import React from 'react'
 import './season.scss'
+import { UserSeason } from 'models'
 
 interface SeasonCardOnGoingProps {
-  season: UserSeason
+  userSeason: UserSeason
 }
-const SeasonCardOnGoing = ({ season }: SeasonCardOnGoingProps) => {
+const SeasonCardOnGoing: React.FC<SeasonCardOnGoingProps> = ({
+  userSeason,
+}: SeasonCardOnGoingProps) => {
   return (
     <div className="cardContent">
       <p className="title">Saison</p>
-      <span className="seasonTitle">{season.title}</span>
+      <span className="seasonTitle">{userSeason.title}</span>
     </div>
   )
 }
diff --git a/src/components/Season/SeasonCardUnlocked.tsx b/src/components/Season/SeasonCardUnlocked.tsx
index 24e69098135b7de1810190fff74e0b7d87376dd7..50642f81229cd4f381650184312c083f40edefc5 100644
--- a/src/components/Season/SeasonCardUnlocked.tsx
+++ b/src/components/Season/SeasonCardUnlocked.tsx
@@ -1,18 +1,35 @@
-import StyledButtonValid from 'components/CommonKit/Button/StyledButtonValid'
-import { UserSeason } from 'models'
-import React from 'react'
+import React, { useCallback } from 'react'
+import { Client, useClient } from 'cozy-client'
+import { useDispatch } from 'react-redux'
 import './season.scss'
+import { UserSeason } from 'models'
+import SeasonService from 'services/season.service'
+import StyledButtonValid from 'components/CommonKit/Button/StyledButtonValid'
+import { updateUserSeasonList } from 'store/season/season.actions'
 
 interface SeasonCardUnlockedProps {
-  season: UserSeason
+  userSeason: UserSeason
 }
-const SeasonCardUnlocked = ({ season }: SeasonCardUnlockedProps) => {
+const SeasonCardUnlocked: React.FC<SeasonCardUnlockedProps> = ({
+  userSeason,
+}: SeasonCardUnlockedProps) => {
+  const client: Client = useClient()
+  const dispatch = useDispatch()
+
+  const launchSeason = useCallback(async () => {
+    const seasonService = new SeasonService(client)
+    const updatedSeason = await seasonService.startUserSeason(userSeason)
+    dispatch(updateUserSeasonList(updatedSeason))
+  }, [client, dispatch, userSeason])
+
   return (
     <div className="cardContent">
       <p className="title">Saison</p>
-      <span className="seasonTitle">{season.title}</span>
+      <span className="seasonTitle">{userSeason.title}</span>
       <span>Icon</span>
-      <StyledButtonValid>Lancer la saison</StyledButtonValid>
+      <StyledButtonValid onClick={launchSeason}>
+        Lancer la saison
+      </StyledButtonValid>
     </div>
   )
 }
diff --git a/src/components/Season/SeasonView.tsx b/src/components/Season/SeasonView.tsx
index 2ba6bc821cb152b99a1fc73cdf99bb41ffcd7b24..085f29f55434e9cd46e077a2affd14f401621b74 100644
--- a/src/components/Season/SeasonView.tsx
+++ b/src/components/Season/SeasonView.tsx
@@ -1,19 +1,18 @@
 import React, { useState } from 'react'
-import SeasonCard from './SeasonCard'
+import './season.scss'
+import { useSelector } from 'react-redux'
+import { EcolyoState } from 'store'
 import CozyBar from 'components/Header/CozyBar'
 import Content from 'components/Content/Content'
 import Header from 'components/Header/Header'
+import SeasonCard from './SeasonCard'
 import StyledIconbutton from 'components/CommonKit/IconButton/StyledIconButton'
 import LeftArrowIcon from 'assets/icons/ico/left-arrow.svg'
 import RightArrowIcon from 'assets/icons/ico/right-arrow.svg'
-import './season.scss'
-
-import { UserSeason } from 'models'
-import { userSeasonData } from '../../../test/__mocks__/userSeasonData.mock'
-import { useSelector } from 'react-redux'
-import { EcolyoState } from 'store'
 
 const SeasonView: React.FC = () => {
+  const { userSeasonList } = useSelector((state: EcolyoState) => state.season)
+
   const marginPx = 16
   const cardWitdh =
     window.outerWidth < 500 ? window.outerWidth - marginPx * 6 : 285
@@ -28,9 +27,6 @@ const SeasonView: React.FC = () => {
     setHeaderHeight(height)
   }
 
-  const [userSeasonLists, setUserSeasonList] = useState<UserSeason[]>(
-    userSeasonData
-  )
   const resetValues = () => {
     //Method used to cancel a swipe on a simple click
     setTouchEnd(0)
@@ -38,7 +34,7 @@ const SeasonView: React.FC = () => {
   }
 
   const moveSliderRight = () => {
-    if (index < userSeasonLists.length - 1) {
+    if (index < userSeasonList.length - 1) {
       if (index === 0)
         setcontainerTranslation(
           (prev: number) => prev - cardWitdh - marginPx * 1.2
@@ -88,8 +84,7 @@ const SeasonView: React.FC = () => {
       setTouchEnd(e.targetTouches[0].clientX)
     if (e.nativeEvent instanceof MouseEvent) setTouchEnd(e.clientX)
   }
-  const { userSeasonList } = useSelector((state: EcolyoState) => state.season)
-  // console.log('seasons', userSeasonList)
+
   return (
     <>
       <CozyBar titleKey={'COMMON.APP_OPTIONS_TITLE'} />
@@ -114,10 +109,10 @@ const SeasonView: React.FC = () => {
               transform: `translateX(${containerTranslation}px)`,
             }}
           >
-            {userSeasonLists.map((season, i) => (
+            {userSeasonList.map((userSeason, i) => (
               <SeasonCard
                 key={i}
-                season={season}
+                userSeason={userSeason}
                 indexSlider={index}
                 index={i}
                 cardWitdh={cardWitdh}
diff --git a/src/db/seasons/bossEntity.json b/src/db/bossEntity.json
similarity index 100%
rename from src/db/seasons/bossEntity.json
rename to src/db/bossEntity.json
diff --git a/src/db/seasons/quizData.json b/src/db/quizData.json
similarity index 100%
rename from src/db/seasons/quizData.json
rename to src/db/quizData.json
diff --git a/src/db/seasons/seasonEntity.json b/src/db/seasonEntity.json
similarity index 89%
rename from src/db/seasons/seasonEntity.json
rename to src/db/seasonEntity.json
index c8cc651684947e0a692c9ad1c260521d9fd816d6..18ab7aff9699922d306886ff7281d0a69d31bc4b 100644
--- a/src/db/seasons/seasonEntity.json
+++ b/src/db/seasonEntity.json
@@ -3,7 +3,6 @@
     "_id": "SEASON0001",
     "title": "Nicolas Hublot",
     "description": "foobar",
-    "duration": { "days": 3 },
     "target": 40,
     "relationships": {
       "boss": {
@@ -16,7 +15,6 @@
     "_id": "SEASON0002",
     "title": "Tata",
     "description": "foobar",
-    "duration": { "days": 3 },
     "target": 40,
     "relationships": {
       "boss": {
@@ -29,7 +27,6 @@
     "_id": "SEASON0003",
     "title": "Titi",
     "description": "foobar",
-    "duration": { "days": 3 },
     "target": 40,
     "relationships": {
       "boss": {
diff --git a/src/models/boss.model.ts b/src/models/boss.model.ts
index b1265acc20488409bcb58e41bb2fdc7cec6012ce..c444fc8830e40e0402d25a114b4819a019ed5d66 100644
--- a/src/models/boss.model.ts
+++ b/src/models/boss.model.ts
@@ -14,7 +14,7 @@ export interface Boss {
   description: string
   duration: Duration
   treshold: number
-  state: UserBossState // Todo enum
+  state: UserBossState
   startDate: DateTime | null
   consumption: number
 }
diff --git a/src/models/index.ts b/src/models/index.ts
index 5f427d46b94742555b05d71bfad086a9a0304ff7..ab6b25d84fbeb5ffa908cbd570a2d171aff80706 100644
--- a/src/models/index.ts
+++ b/src/models/index.ts
@@ -11,6 +11,7 @@ export * from './indicator.model'
 export * from './konnector.model'
 export * from './modal.model'
 export * from './profile.model'
+export * from './relation.model'
 export * from './report.model'
 export * from './season.model'
 export * from './boss.model'
diff --git a/src/models/relation.model.ts b/src/models/relation.model.ts
new file mode 100644
index 0000000000000000000000000000000000000000..6045092d586ffd72e17e36df1d87a1630547a254
--- /dev/null
+++ b/src/models/relation.model.ts
@@ -0,0 +1,4 @@
+export interface Relation {
+  _id: string
+  _type: string
+}
diff --git a/src/models/season.model.ts b/src/models/season.model.ts
index 3b62f0c21d7270159e58556b5243dd9841096993..18738cc1b8cffb1bfc592969e5cc424a51a3f116 100644
--- a/src/models/season.model.ts
+++ b/src/models/season.model.ts
@@ -10,7 +10,6 @@ export interface SeasonEntity {
   id: string
   title: string
   description: string
-  duration: Duration
   target: number
   boss: BossEntity
   quizType: string
@@ -22,7 +21,6 @@ export interface UserSeason {
   title: string
   description: string
   state: UserSeasonState
-  duration: Duration
   target: number
   progress: number
   boss: Boss
diff --git a/src/services/boss.service.ts b/src/services/boss.service.ts
index 1d31b4b1e516744c05e4bfea719cc78380e52c0c..1f84976f3d6ec6cbc07a97d52911220567ebe83e 100644
--- a/src/services/boss.service.ts
+++ b/src/services/boss.service.ts
@@ -2,6 +2,7 @@ import { Client, QueryDefinition, QueryResult, Q } from 'cozy-client'
 import { BOSS_DOCTYPE } from 'doctypes/com-grandlyon-ecolyo-boss'
 import { Boss, BossEntity } from 'models/boss.model'
 import { UserBossState } from 'enum/userBoss.enum'
+import { Duration } from 'luxon'
 
 export default class BossService {
   private readonly _client: Client
@@ -18,13 +19,9 @@ export default class BossService {
     return bosses
   }
   public async getBossEntityById(bossId: string): Promise<BossEntity> {
-    const query: QueryDefinition = Q(BOSS_DOCTYPE)
-    const {
-      data: [boss],
-    }: QueryResult<BossEntity> = await this._client.query(
-      query.where({ _id: bossId })
-    )
-    return boss
+    const query: QueryDefinition = Q(BOSS_DOCTYPE).where({ _id: bossId })
+    const { data }: QueryResult<BossEntity[]> = await this._client.query(query)
+    return data && data[0]
   }
 
   public async deleteAllBossEntities(): Promise<boolean> {
@@ -50,8 +47,6 @@ export default class BossService {
   }
 
   public formatToUserBoss(boss: BossEntity): Boss {
-    console.log('boss', boss)
-
     const userBoss: Boss = {
       id: boss.id,
       title: boss.title,
@@ -64,6 +59,7 @@ export default class BossService {
     }
     return userBoss
   }
+
   public uptadeUserBossConsumption(
     boss: Boss,
     newConsumptionValue: number
@@ -74,4 +70,30 @@ export default class BossService {
     }
     return userBoss
   }
+
+  public getBossfromBossEntities(
+    bossEntityList: BossEntity[],
+    searchId: string
+  ): Boss {
+    let boss: Boss = {
+      id: '',
+      title: '',
+      description: '',
+      duration: Duration.fromObject({ day: 0 }),
+      treshold: 15,
+      state: UserBossState.LOCKED,
+      startDate: null,
+      consumption: 0,
+    }
+    if (bossEntityList.length > 0) {
+      const bossEntityIndex = bossEntityList.findIndex(
+        entity => entity.id === searchId
+      )
+      if (bossEntityIndex >= 0) {
+        const bossEntity: BossEntity = bossEntityList[bossEntityIndex]
+        boss = this.formatToUserBoss(bossEntity)
+      }
+    }
+    return boss
+  }
 }
diff --git a/src/services/initialization.service.ts b/src/services/initialization.service.ts
index bbc452881bbbc8dba6b0b3d8b5f42adc4fda0530..a6d565bc19bfa674cf668564edbb718de84ddc8d 100644
--- a/src/services/initialization.service.ts
+++ b/src/services/initialization.service.ts
@@ -24,8 +24,8 @@ import { FluidStatus, Profile } from 'models'
 import EcogestureService from 'services/ecogesture.service'
 import SeasonService from 'services/season.service'
 import ecogestureData from 'db/ecogestureData.json'
-import seasonEntityData from 'db/seasons/seasonEntity.json'
-import bossEntityData from 'db/seasons/bossEntity.json'
+import seasonEntityData from 'db/seasonEntity.json'
+import bossEntityData from 'db/bossEntity.json'
 
 import ProfileService from 'services/profile.service'
 import profileData from 'db/profileData.json'
diff --git a/src/services/season.service.ts b/src/services/season.service.ts
index 9b4969ff46c51b84ac8b95cff3a924eb0e810fb9..d11f554d19ba42ee224179d9b00f70c2b4a6c21f 100644
--- a/src/services/season.service.ts
+++ b/src/services/season.service.ts
@@ -2,16 +2,13 @@ import { Client, QueryDefinition, QueryResult, Q } from 'cozy-client'
 import { SEASON_DOCTYPE, USERSEASON_DOCTYPE } from 'doctypes'
 import { SeasonEntity, UserSeason } from 'models/season.model'
 import { Boss, BossEntity } from 'models/boss.model'
-import get from 'lodash/get'
 
 import { UserSeasonState, UserSeasonSuccess } from 'enum/userSeason.enum'
 import BossService from './boss.service'
 import { UpdateUserSeason } from 'enum/updateUserSeason.enum'
-
-export interface Relation {
-  _id: string
-  _type: string
-}
+import { DateTime } from 'luxon'
+import { Relation } from 'models'
+import { getRelationship } from 'utils/utils'
 
 export default class SeasonService {
   private readonly _client: Client
@@ -29,26 +26,11 @@ export default class SeasonService {
     return userSeasons
   }
 
-  /**
-   * Get one relation in doc
-   *
-   * @param {object} doc - DocumentEntity
-   * @param {string} relName - Name of the relation
-   */
-  public getRelationship<D>(doc: D, relName: string): Relation {
-    return get(doc, `relationships.${relName}[0]`, [])
-  }
-
   public formatToUserSeason(season: SeasonEntity, boss: Boss): UserSeason {
-    // const bossService = new BossService(this._client)
-    // const seasonBoss: Relation = this.getRelationship(season, 'boss')
-    // const bossEntity = await bossService.getBossEntityById(seasonBoss._id)
-
     const userSeason: UserSeason = {
       id: season.id,
       title: season.title,
       description: season.description,
-      duration: season.duration,
       target: season.target,
       boss: boss,
       state: UserSeasonState.LOCKED,
@@ -58,8 +40,6 @@ export default class SeasonService {
       endingDate: null,
       quiz: null,
     }
-    console.log('userSeason', userSeason)
-
     return userSeason
   }
 
@@ -70,57 +50,53 @@ export default class SeasonService {
      * else Push new UserSeason into list
      * return UserSeason List
      */
-    const bossService = new BossService(this._client)
-    console.log('include')
-    const querySeasonEntity: QueryDefinition = Q(SEASON_DOCTYPE)
-      .where({})
-      .include(['boss'])
-    console.log('include2')
-    // const {
-    //   data: seasonEntity,
-    // }: QueryResult<SeasonEntity[]> = await this._client.query(querySeasonEntity)
-    const result = await this._client.query(querySeasonEntity)
-    console.log('result', result)
-    console.log('include3')
+    const querySeasonEntity: QueryDefinition = Q(SEASON_DOCTYPE).include([
+      'boss',
+    ])
+    const {
+      data: seasonEntityList,
+      included: bossEntityList,
+    }: QueryResult<SeasonEntity[], BossEntity[]> = await this._client.query(
+      querySeasonEntity
+    )
+
     const queryUserSeason: QueryDefinition = Q(USERSEASON_DOCTYPE)
     const {
-      data: userSeason,
+      data: userSeasonList,
     }: QueryResult<UserSeason[]> = await this._client.query(queryUserSeason)
 
-    console.log('seasonEntity', seasonEntity)
-    console.log('relationships', relationships)
+    const bossService = new BossService(this._client)
     let buildList: UserSeason[] = []
-
-    if (seasonEntity.length > 0 && userSeason.length === 0) {
-      seasonEntity.forEach(async season => {
-        console.log('season', season)
-
-        // const seasonBoss: Relation = this.getRelationship(season, 'boss')
-        // const bossEntity = await bossService.getBossEntityById(seasonBoss._id)
-
-        // console.log('bossEntity', bossEntity)
-        // const userBoss: Boss = bossService.formatToUserBoss(bossEntity)
-        // buildList.push(this.formatToUserSeason(season, userBoss))
+    if (seasonEntityList.length > 0 && userSeasonList.length === 0) {
+      seasonEntityList.forEach(async season => {
+        console.log(season)
+        const bossEntityRelation: Relation = getRelationship(season, 'boss')
+        const boss: Boss = bossService.getBossfromBossEntities(
+          bossEntityList || [],
+          bossEntityRelation._id
+        )
+        const userSeason = this.formatToUserSeason(season, boss)
+        buildList.push(userSeason)
       })
       buildList = this.isAllSeasonLocked(buildList)
-      console.log('buildList', buildList)
-      return buildList
-    }
-    if (userSeason.length !== 0 && seasonEntity.length !== 0) {
-      seasonEntity.forEach(season => {
-        if (userSeason.some(found => found.id === season.id)) {
-          const foundSeason = userSeason.find(s => s.id === season.id)
-          if (foundSeason) {
-            buildList.push(foundSeason)
-          }
+    } else if (seasonEntityList.length > 0 && userSeasonList.length > 0) {
+      seasonEntityList.forEach(season => {
+        const userSeasonIndex = userSeasonList.findIndex(
+          entity => entity.id === season.id
+        )
+        if (userSeasonIndex >= 0) {
+          const userSeason: UserSeason = userSeasonList[userSeasonIndex]
+          buildList.push(userSeason)
         } else {
-          // format seasonEntity to fit userSeason array
-          // buildList.push(this.formatToUserSeason(season))
+          const bossEntityRelation: Relation = getRelationship(season, 'boss')
+          const boss: Boss = bossService.getBossfromBossEntities(
+            bossEntityList || [],
+            bossEntityRelation._id
+          )
+          buildList.push(this.formatToUserSeason(season, boss))
         }
       })
       buildList = this.isAllSeasonLocked(buildList)
-
-      return buildList
     }
     return buildList
   }
@@ -155,7 +131,7 @@ export default class SeasonService {
     return userSeasons
   }
 
-  public async startUserSeason(userSeason: UserSeason): Promise<boolean> {
+  public async startUserSeason(userSeason: UserSeason): Promise<UserSeason> {
     /*
       Passer une selected userSeason ONGOING
       0 Progress
@@ -164,7 +140,20 @@ export default class SeasonService {
       Quizz .
       create userSeason en base
     */
-    return true
+    userSeason.state = UserSeasonState.ONGOING
+    userSeason.progress = 0
+    userSeason.startDate = DateTime.local()
+    userSeason.success = UserSeasonSuccess.ONGOING
+    try {
+      const { data: updatedUserSeason } = await this._client.create(
+        USERSEASON_DOCTYPE,
+        userSeason
+      )
+      return updatedUserSeason
+    } catch (error) {
+      console.log('Initialization error: ', error)
+      throw error
+    }
   }
 
   public async updateUserSeason(
diff --git a/src/utils/utils.ts b/src/utils/utils.ts
index a9358f18d3b6faced558538cb57f1a3b3836c782..60918c44f033c707df919c78fe7f543c5b64d87d 100644
--- a/src/utils/utils.ts
+++ b/src/utils/utils.ts
@@ -1,3 +1,5 @@
+import get from 'lodash/get'
+import { Relation } from 'models'
 import { FluidType } from '../enum/fluid.enum'
 import { KonnectorUpdate } from '../enum/konnectorUpdate.enum'
 
@@ -41,3 +43,13 @@ export function formatNumberValues(
     return '--,--'
   }
 }
+
+/**
+ * Get one relation in doc
+ *
+ * @param {object} doc - DocumentEntity
+ * @param {string} relName - Name of the relation
+ */
+export function getRelationship<D>(doc: D, relName: string): Relation {
+  return get(doc, `relationships.${relName}.data`, [])
+}
diff --git a/test/__mocks__/userSeasonData.mock.ts b/test/__mocks__/userSeasonData.mock.ts
index 911d311d46c9ca68a2b66dbeda2348be6e1b262a..39910106234e70abffa02d2fce52e6bba149810f 100644
--- a/test/__mocks__/userSeasonData.mock.ts
+++ b/test/__mocks__/userSeasonData.mock.ts
@@ -9,7 +9,6 @@ export const userSeasonData: UserSeason[] = [
     title: 'Nicolas Hublot',
     description: 'foobar',
     state: UserSeasonState.UNLOCKED,
-    duration: Duration.fromObject({ days: 30 }),
     target: 40,
     progress: 0,
     boss: bossData,
@@ -23,7 +22,6 @@ export const userSeasonData: UserSeason[] = [
     title: 'Tata',
     description: 'foobar',
     state: UserSeasonState.LOCKED,
-    duration: Duration.fromObject({ days: 30 }),
     target: 40,
     progress: 0,
     boss: bossData,
@@ -37,7 +35,6 @@ export const userSeasonData: UserSeason[] = [
     title: 'Toto',
     description: 'foobar',
     state: UserSeasonState.ONGOING,
-    duration: Duration.fromObject({ days: 30 }),
     target: 40,
     progress: 0,
     boss: bossData,