彼女をデレさせる方法を、将来結婚する俺だけが知っている

Masaomi wakes to find himself thrown fifteen years into the past, standing before Arisugawa Yuki, the woman he will one day marry, now a lonely high schooler who trusts no one. In their original timeline the two would not meet until adulthood, but Masaomi already knows the isolated, friendless years ahead of her and the regret she will carry from them. Determined to change her fate, he enrolls at her school under the guise of a stranger and sets out to reshape her adolescence before their real story even begins.