Sukisho

Sukisho is a yaoi anime about a boy named Sora Hashiba who falls from a window in his school, and upon returning from the hospital, finds a strange boy who claims to be his roommate in his dorm. The boy (Sunao Fujimori) was a childhood friend of Sora's, though Sora has no memory of him. Though they don't get along at first, the two eventually end up growing on each other.

 Sukisho is a colorful, crazy anime full of adorable characters and random, insane situations that's a lot of fun to watch from start to finish.