My Wife is Wagatsuma-san 7

One day, a super-average 2nd-year high school student who wants a girlfriend, Aoshima, suddenly awakens to the ability to time slip. Ten years in the future, he is *gasp* married to the cutest girl in school, Wagatsuma-san! In the present, they are only classmates, so how in the world does he end up with the unobtainable Wagatsuma-san?! A time-slipping Romcom coming at you from a brand spanking new duo!