Arakawa: Under the Bridge X Bridge: Series 1 (2010)

All 13 episodes from the first series of the Japanese anime, following the adventures of a boy who falls in love with a homeless girl who lives beneath a city bridge. After accidentally falling into the waters beneath the Arakawa Bridge, rich kid Ko Ichinomiya's life is saved by eccentric local homeless girl Nino, who just happens to believe she's a Venusian. Finding himself indebted to Nino, Ko faithfully agrees to pay her back by granting her wish that he become her boyfriend, so beginning a new life alongside the other eccentrics that live under the bridge.