Kanojo o Dere Saseru Houhou o, Shourai Kekkon Suru Ore dake ga Shitteiru

Q: Why did you choose this high school? A: Because my future wife is enrolling here. When I woke up, I had time-leaped 15 years into the past. Standing before me was Yuki, my future wife, wearing a school uniform. In the original timeline, we wouldn't meet until we became adults and eventually got married, so we're sti…