Arakawa Under The Bridge

Gag manga about a young “elite” man who has a policy of not being in debt to anyone. But he ends up owing his life to a strange girl who saves his life. Nino, the girl, believes she is from venus & lives under the bridge by the Arakawa river. So the young man ends up living there too.

Ichinomiya Kou has always lived according to the creed of his wealthy, successful family: never be in debt to anyone. But one day, under the Arakawa Bridge, his life is saved by a homeless girl named Nino. In order to pay her back, Kou promises to be her boyfriend; and thus begins his new life under the bridge.