Arakawa Under the Bridge(1714)

Other Title(s)荒川アンダーザブリッジ
Genre(s)Comedy, Daily Life, Romance, Seinen
Synopsis* Based on a seinen gag manga by Nakamura Hikaru serialised in Young GanGan.

A young upperclass elite man, Ichinomiya 'Riku' Kou, who has a policy of not being in debt to anyone, ends up owing his life to a strange girl who rescues him. Nino is a beautiful homeless girl who believes that she is a martian and lives under the bridge by the Arakawa river. So the young man ends up living there too.