Erased - Satoru x Kayo timeline

Spoiler!!! Don't go on until you have at least watch the anime up until episode 10-11 or read the manga to the equivalent chapter. This story is the alternate path line where after the attempted drowning, he wakes up as a 18 year old kid, instead of 26 year old man. This arc shows his life continuing the fated Kayo...

Fate/Zasshuu! (Shirou x Female Gilgamesh)

Shirou Emiya and Gilgamesh were fighting and Gilgamesh almost won....until a Heroic Spirit named Tiresias casted a curse on Gilgamesh turning him into a female, and Transporting Both Shirou and Gilgamesh to another world. To get out of this mess the Heroic spirit layed down one requirement...."Fall in love and make a...