diff --git a/app/controllers/api/reports/sad_streak_controller.rb b/app/controllers/api/reports/sad_streak_controller.rb
deleted file mode 100644
index b8b80da4d8a..00000000000
--- a/app/controllers/api/reports/sad_streak_controller.rb
+++ /dev/null
@@ -1,13 +0,0 @@
-# frozen_string_literal: true
-
-class API::Reports::SadStreakController < API::BaseController
-  def index
-    ids = User.where(
-      hibernated_at: nil,
-      retired_on: nil,
-      graduated_on: nil,
-      sad_streak: true
-    ).pluck(:last_sad_report_id)
-    @reports = Report.joins(:user).where(id: ids).order(reported_on: :desc)
-  end
-end
diff --git a/app/javascript/components/report.vue b/app/javascript/components/report.vue
deleted file mode 100644
index 05ef5a98766..00000000000
--- a/app/javascript/components/report.vue
+++ /dev/null
@@ -1,102 +0,0 @@
-<template lang="pug">
-.card-list-item(:class='wipClass')
-  .card-list-item__inner
-    .card-list-item__user(v-if='displayUserIcon')
-      a.card-list-item__user-link(:href='report.user.url')
-        span(:class='["a-user-role", roleClass]')
-          img.card-list-item__user-icon.a-user-icon(
-            :src='report.user.avatar_url',
-            :title='report.user.login_name',
-            :alt='report.user.login_name')
-    .card-list-item__rows
-      .card-list-item__row
-        header.card-list-item-title
-          .card-list-item-title__start
-            .a-list-item-badge.is-wip(v-if='report.wip')
-              span
-                | WIP
-            h2.card-list-item-title__title
-              a.card-list-item-title__link.a-text-link.js-unconfirmed-link(
-                :href='report.url')
-                img.card-list-item-title__emotion-image(
-                  :src='emotionImg',
-                  :alt='report.emotion')
-                | {{ report.title }}
-            .card-list-item-title__end(v-if='currentUserId === report.user.id')
-              label.card-list-item-actions__trigger(:for='report.id')
-                i.fa-solid.fa-ellipsis-h
-              .card-list-item-actions
-                input.a-toggle-checkbox(type='checkbox', :id='report.id')
-                .card-list-item-actions__inner
-                  ul.card-list-item-actions__items
-                    li.card-list-item-actions__item
-                      a.card-list-item-actions__action(:href='report.editPath')
-                        i.fa-solid.fa-pen
-                        | 内容変更
-                    li.card-list-item-actions__item
-                      a.card-list-item-actions__action(:href='report.newPath')
-                        i.fa-solid.fa-copy
-                        | コピー
-                  label.a-overlay(:for='report.id')
-
-      .card-list-item__row
-        .card-list-item-meta
-          .card-list-item-meta__items
-            .card-list-item-meta__item
-              a.a-user-name(:href='report.user.url') {{ report.user.long_name }}
-            .card-list-item-meta__item
-              time.a-meta
-                | {{ report.reportedOn }}の日報
-      hr.card-list-item__row-separator(v-if='report.hasAnyComments')
-      .card-list-item__row(v-if='report.hasAnyComments')
-        .card-list-item-meta
-          .card-list-item-meta__items
-            .card-list-item-meta__item
-              .a-meta
-                | コメント（{{ report.numberOfComments }}）
-            .card-list-item-meta__item
-              .card-list-item__user-icons
-                comment-user-icon(
-                  v-for='comment in report.comments',
-                  :key='comment.id',
-                  :comment='comment')
-            .card-list-item-meta__item
-              time.a-meta(
-                datetime='report.lastCommentDatetime',
-                pubdate='\'pubdate\'')
-                | 〜 {{ report.lastCommentDate }}
-    .stamp.stamp-approve(v-if='this.report.hasCheck')
-      h2.stamp__content.is-title
-        | 確認済
-      time.stamp__content.is-created-at
-        | {{ report.checkDate }}
-      .stamp__content.is-user-name
-        .stamp__content-inner
-          | {{ report.checkUserName }}
-</template>
-
-<script>
-import CommentUserIcon from 'comment-user-icon'
-
-export default {
-  components: {
-    'comment-user-icon': CommentUserIcon
-  },
-  props: {
-    report: { type: Object, required: true },
-    currentUserId: { type: Number, required: true },
-    displayUserIcon: { type: Boolean }
-  },
-  computed: {
-    roleClass() {
-      return `is-${this.report.user.primary_role}`
-    },
-    wipClass() {
-      return { 'is-wip': this.report.wip }
-    },
-    emotionImg() {
-      return `/images/emotion/${this.report.emotion}.svg`
-    }
-  }
-}
-</script>
diff --git a/app/javascript/components/sad_reports.vue b/app/javascript/components/sad_reports.vue
deleted file mode 100644
index 12fd5e52e23..00000000000
--- a/app/javascript/components/sad_reports.vue
+++ /dev/null
@@ -1,47 +0,0 @@
-<template lang="pug">
-.card-list__items(v-if='reports && reports.length > 0')
-  report(
-    v-for='report in reports',
-    :key='report.id',
-    :report='report',
-    :current-user-id='currentUserId',
-    :display-user-icon='displayUserIcon')
-</template>
-<script>
-import Report from 'components/report.vue'
-
-export default {
-  name: 'SadReports',
-  components: {
-    report: Report
-  },
-  props: {
-    displayUserIcon: {
-      type: Boolean,
-      default: true
-    }
-  },
-  data() {
-    return {
-      reports: null,
-      currentUserId: null
-    }
-  },
-  created() {
-    this.getSadReports()
-  },
-  methods: {
-    async getSadReports() {
-      const response = await fetch('/api/reports/sad_streak.json', {
-        method: 'GET',
-        headers: { 'X-Requested-With': 'XMLHttpRequest' },
-        credentials: 'same-origin',
-        redirect: 'manual'
-      }).catch((error) => console.warn(error))
-      const json = await response.json().catch((error) => console.warn(error))
-      this.reports = json.reports
-      this.currentUserId = json.currentUserId
-    }
-  }
-}
-</script>
diff --git a/app/javascript/packs/application.js b/app/javascript/packs/application.js
index e6d3faf6e2b..11bc9989c2d 100644
--- a/app/javascript/packs/application.js
+++ b/app/javascript/packs/application.js
@@ -70,7 +70,6 @@ import Watches from '../components/watches.vue'
 import WatchToggle from '../components/watch-toggle.vue'
 import Footprints from '../components/footprints.vue'
 import QuestionAnswers from '../components/question-answers.vue'
-import SadReports from '../components/sad_reports.vue'
 import UserProducts from '../components/user-products.vue'
 import ActionCompletedButton from '../components/action-completed-button.vue'
 import CourseBooks from '../components/course-books.vue'
@@ -85,7 +84,6 @@ mounter.addComponent(Watches)
 mounter.addComponent(WatchToggle)
 mounter.addComponent(Footprints)
 mounter.addComponent(QuestionAnswers)
-mounter.addComponent(SadReports)
 mounter.addComponent(UserProducts)
 mounter.addComponent(ActionCompletedButton)
 mounter.addComponent(CourseBooks)
diff --git a/app/views/api/reports/sad_streak/index.json.jbuilder b/app/views/api/reports/sad_streak/index.json.jbuilder
deleted file mode 100644
index 2998f10b77e..00000000000
--- a/app/views/api/reports/sad_streak/index.json.jbuilder
+++ /dev/null
@@ -1,10 +0,0 @@
-json.reports @reports do |report|
-  json.partial! "api/reports/report", report: report
-  json.partial! "api/reports/checks", checks: report.checks
-  json.partial! "api/comments/user_icons", report: report
-  json.user do
-    json.partial! "api/users/user", user: report.user
-  end
-end
-
-json.currentUserId current_user.id
diff --git a/app/views/users/_sad_emotion_report.html.slim b/app/views/users/_sad_emotion_report.html.slim
index 4dd362b86dc..c6555552bbb 100644
--- a/app/views/users/_sad_emotion_report.html.slim
+++ b/app/views/users/_sad_emotion_report.html.slim
@@ -7,4 +7,4 @@
         | のユーザー
     hr.a-border
     .card-list
-          div(data-vue="SadReports")
+      = render partial: 'reports/report', collection: reports, as: :report, locals: { user_icon_display: true, actions_display: false }
diff --git a/config/routes/api.rb b/config/routes/api.rb
index c1c8f4901cd..5005451f721 100644
--- a/config/routes/api.rb
+++ b/config/routes/api.rb
@@ -49,7 +49,6 @@
         get 'counts', on: :collection
       end
       resources :recents, only: %i(index)
-      resources :sad_streak, only: %i(index)
     end
     resources :watches, only: %i(index)
     namespace "watches" do