Only I, who will one day marry her, know the secret to making her affectionate.

Suzuhara Masahiro, a 30-year-old man, woke up to find himself time-leaping 15 years into the past. To fulfill the wish of his beloved wife, Yuki, who asked, "If you go back in time, please teach me about my youth," Masahiro enrolled in the same high school as her. However, the past of his doting wife turned out to be that of a tough and unapproachable girl! "Why do you know my secret!" "Well, because we're married (in the future)." I'm going to repaint the gray youth of my wife! A time-loop love comedy about reliving youth!