完璧人間の弟に彼女も未来も全て奪われた俺は、過去に戻って青春をやり直す。 (Associated Names)

In spring at the age of 26, after 10 years of dating since 2nd year of high school, I proposed to her. Her reply was that she would marry my younger brother instead of me. My younger brother, who’s a perfect human being and the complete opposite of me, has been having an affair with…