Manga My Wife Is Wagatsuma-san
Wagatsuma-san wa Ore no Yome
Genre: Shounen , Drama , School life , Sci fi , Romance , Slice of life
Aoshima Hitoshi is a high school student who dreams of having a girlfriend one day. One night, he wakes up to find himself in the future 10 years later, and now he is married to the most beautiful girl in the entire school! How did he manage to marry the best girl in school from a simple friendship?