My senior in high school, Mikami Baba, reported on SNS that he got married in the United States. At that moment, Ibuki Doi finds out that him long-hidden first love has shattered. Drunk from the shock, when he wakes up, Ibuki has somehow returned to his high school days! Ibuki, who was timid in the past, couldn't even get Baba to remember him name, but he tries to approach him, wanting to become even a little closer. However, Baba shows a negative reaction to homosexuality, and on top of that, he is suspected of being a stalker!? 高校時代の先輩・馬場深神がアメリカで同性婚をしたことをSNSで報告した。その瞬間、土井伊芙生は長年秘めていた初恋が砕け散ったことを知る――。 ショックのあまり酔いつぶれ、目を覚ますと、伊芙生はなぜか高校時代に戻っていた！ 臆病だった過去の伊芙生は馬場に名前も覚えてもらえなかったが、少しでも親しくなりたいとアプローチを試みる。しかし馬場からは同性愛に拒否反応を示され、その上ストーカー疑惑もかけられてしまい――!?