Tsukimachi Yamato, who has fulfilled his dream since high school and works as a teacher, finds a familiar name in the list of transfer students one day. "Komiya Isshin" -- that was the name of a former best friend who fell ill and was unconscious when he was in his third year of high school. He says that Isshin, who regained consciousness two years ago, has been transferred to rehabilitate and restart his high school life. Although it's a different kind of teacher and student than before, the two have met again like a dream, and decided to fulfill the "list of things to do before graduation" that they couldn't do in the past.
「二人でいればそこが青春の1ページでしょ？」
高校時代からの夢を叶え教師として働く月待大和はある日、編入生名簿に見知った名前を見つける。
”小宮一心” ――それは高3のときに病に倒れ意識不明となっていたかつての親友の名だった。
2年前に意識を取り戻した一心は、リハビリに励み、高校生活をやり直すために編入してきたのだと言う。
教師と生徒という以前とは違う形ではあるものの夢のような再会を果たした二人は、昔できなかった「卒業までにやりたいことリスト」を叶えていくことにして――。