Kanojo wo Dere Saseru Houhou wo, Shourai Kekkon Suru Ore dake ga Shitteiru
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
Ask him why he chose this particular high school and the answer is simple: his future wife is about to enroll. A man wakes to find himself thrown fifteen years into his own past, face to face with Arisugawa Yuki in a uniform he has never seen, long before the adult meeting that once led to their marriage. Knowing she is friendless, wary of everyone, and destined to look back on these years with regret, he decides to rewrite her adolescence from the ground up.
