diff --git a/src/app/adjust/WeekView.tsx b/src/app/adjust/WeekView.tsx
index ef94438..d11fb92 100644
--- a/src/app/adjust/WeekView.tsx
+++ b/src/app/adjust/WeekView.tsx
@@ -3,7 +3,7 @@
 import React, { useState } from "react"
 import { formatTime, getEventPosition } from "../../lib/draft/utils"
 import { Period } from "@/lib/scheduling"
-import { coursePeriodsThroughWeeks } from "@/lib/course"
+import { CoursePeriod } from "@/lib/course"
 import { Course } from "@/third-party/twinte-parser-type"
 import { Button } from "@/components/ui/button"
 import { ChevronLeft, ChevronRight } from "lucide-react"
@@ -13,7 +13,7 @@ type WeekViewProps = {
   currentDate: Date
   handlePeriodClick: (period: Period) => Promise<void>
   isButtonActive: boolean
-  courses: Course[]
+  coursePeriods: CoursePeriod[]
 }
 
 const handleClassClick = (courseWithPeriod: CourseWithPeriod) => {
@@ -35,7 +35,7 @@ export function WeekView({
   currentDate,
   handlePeriodClick,
   isButtonActive,
-  courses,
+  coursePeriods,
 }: WeekViewProps) {
   const [currentWeekIndex, setCurrentWeekIndex] = useState(0)
 
@@ -47,8 +47,6 @@ export function WeekView({
 
   const hours = Array.from({ length: 24 }, (_, i) => i)
 
-  const coursePeriods = coursePeriodsThroughWeeks(courses, currentDate)
-
   const handleNextWeek = () => {
     setCurrentWeekIndex(prevIndex => Math.min(prevIndex + 1, 3))
   }
@@ -56,6 +54,7 @@ export function WeekView({
   const handlePreviousWeek = () => {
     setCurrentWeekIndex(prevIndex => Math.max(prevIndex - 1, 0))
   }
+  console.log("coursePeriods:", coursePeriods)
 
   /** @todo Reduce this TOO DEEP nest */
   return (
diff --git a/src/app/adjust/candidate.tsx b/src/app/adjust/candidate.tsx
index 6ce6b03..e4440e7 100644
--- a/src/app/adjust/candidate.tsx
+++ b/src/app/adjust/candidate.tsx
@@ -11,6 +11,8 @@ import { WeekView } from "./WeekView"
 import { Course } from "@/third-party/twinte-parser-type"
 import { YesNoDialog } from "@/components/ui/dialog"
 import { coursePeriodsThroughWeeks } from "@/lib/course"
+import { CoursePeriod, courseToPeriods } from "@/lib/course"
+import { getUserCourseCodes } from "@/lib/server"
 
 type Props = {
   title: string
@@ -20,6 +22,7 @@ type Props = {
   selectedDurationMinute: number
   /** 履修中の講義一覧 */
   courses: Course[]
+  allCourses: Course[]
 }
 
 export default function Candidate(props: Props) {
@@ -34,15 +37,41 @@ export default function Candidate(props: Props) {
     setIsButtonActive(props.title.trim() !== "")
   }, [props.title])
 
+  // 自分の授業とその時間の配列
+  const coursePeriods: CoursePeriod[] = props.courses.map(course => ({
+    course,
+    periods: courseToPeriods(new Date(), course),
+  }))
+
   async function handleSchedule() {
     setIsButtonActive(false)
     try {
-      const coursePeriods = coursePeriodsThroughWeeks(props.courses, new Date())
+      // 招待相手ごとの授業とその時間の配列
+      const coursePeriodsOfGuests: CoursePeriod[][] = (
+        await Promise.all(props.selectedUserIds.map(getUserCourseCodes))
+      ).map(codes =>
+        props.allCourses
+          .filter(({ code }) => codes.includes(code))
+          .map(course => ({
+            course,
+            periods: courseToPeriods(new Date(), course),
+          })),
+      )
+
+      console.debug("自分の授業とその時間の配列", coursePeriods)
+      console.debug("招待相手ごとの授業とその時間の配列", coursePeriodsOfGuests)
+
+      // 自分と招待相手全員を合わせた授業時間の配列
+      const classPeriodsOfUsers: Period[] = [...coursePeriodsOfGuests, coursePeriods].flatMap(
+        coursePeriods => coursePeriods.flatMap(({ periods }) => periods),
+      )
+
+      console.debug("すべての授業の、授業時間の配列", classPeriodsOfUsers)
+
       const periods = [
         ...(await periodsOfUsers(props.selectedUserIds, props.excludePeriod)),
-        coursePeriods.flatMap(({ periods }) => periods),
+        classPeriodsOfUsers,
       ]
-      console.debug("授業とそれぞれの授業時間の配列", coursePeriods)
 
       const freePeriods = await findFreePeriods(props.selectedDurationMinute, periods)
       console.log("freePfreePeriods:", freePeriods)
@@ -128,25 +157,6 @@ export default function Candidate(props: Props) {
         ""
       )}
 
-      {/* <ul className="py-4 space-y-2">
-
-        {freePeriods.map(period => (
-          <li key={period.start.toString()}>
-            <Button
-              disabled={!isButtonActive}
-              variant={selectedPeriod?.start === period.start ? "secondary" : "ghost"}
-              className="w-full justify-between font-normal"
-              onClick={() => handlePeriodClick(period)}
-            >
-              <span className="flex items-center mr-2 h-4 w-4">
-                <span>{formatDate(period.start)}</span>
-                <span className="px-2">～</span>
-                <span>{formatDate(period.end)}</span>
-              </span>
-            </Button>
-          </li>
-        ))}
-      </ul> */}
     </div>
   )
 }
diff --git a/src/app/adjust/client.tsx b/src/app/adjust/client.tsx
index 73264e6..5b80f41 100644
--- a/src/app/adjust/client.tsx
+++ b/src/app/adjust/client.tsx
@@ -116,6 +116,7 @@ export default function SchedulePlanner(props: {
         title={title}
         users={users}
         courses={courses}
+        allCourses={allCourses}
       />
       <ToastContainer />
     </div>
diff --git a/src/app/adjust/page.tsx b/src/app/adjust/page.tsx
index f7be30b..7fd08b5 100644
--- a/src/app/adjust/page.tsx
+++ b/src/app/adjust/page.tsx
@@ -4,7 +4,7 @@ import { getServerSession } from "next-auth"
 import { authOptions } from "@/lib/auth"
 import { fetchCourses } from "@/third-party/twinte-parser"
 import { Course } from "@/third-party/twinte-parser-type"
-import { getUserCourseIds } from "@/lib/server"
+import { getUserCourseCodes } from "@/lib/server"
 
 export default async function AdjustPage() {
   const session = await getServerSession(authOptions)
@@ -12,7 +12,7 @@ export default async function AdjustPage() {
   const allCourses = (await fetchCourses()) as Course[]
   // console.log(allCourses)
 
-  const userCourseIds = session?.user.id ? await getUserCourseIds(session.user.id) : undefined
+  const userCourseIds = session?.user.id ? await getUserCourseCodes(session.user.id) : undefined
   console.log("userCourseIds:", userCourseIds)
 
   const courses = allCourses.filter(course => userCourseIds?.includes(course.code))
diff --git a/src/lib/server.ts b/src/lib/server.ts
index bc0b83a..f01cd53 100644
--- a/src/lib/server.ts
+++ b/src/lib/server.ts
@@ -26,7 +26,7 @@ export async function resetAndUpdateUserCourses(userId: string, courses: Course[
   }
 }
 
-export async function getUserCourseIds(userId: string): Promise<string[]> {
+export async function getUserCourseCodes(userId: string): Promise<string[]> {
   try {
     const userCourses = await prisma.course.findMany({
       where: { userId: userId },