Arakawa Under the Bridge - Season 1 - Eps 1: Bridge
Falling off a bridge while trying to get his pants back Ichinomiya Kou is saved by a woman named Nino. Desperate to live up to his family motto of never being indebted to anyone he tries to pay Nino off only to find that she is completely uninterested in his riches and prefers living under the bridge. Desperate to the point of panic to be rid of his debt to her he asks if there is anything she wants. "Could you fall in love with me," she responds and so Kou ends up living under the bridge as well doing his best to fall in love with her.
About Arakawa Under the Bridge

Title: Arakawa Under the Bridge
First Air Date: 2010-04-05
Last Air Date: 2010-12-26
Status: Ended
Rating: 6.5/10 (from 34 votes)
Language: JA
Seasons: 2
Total Episodes: 26
Network: TV Tokyo
Genres: Animation, Comedy
Production Companies: SHAFT, AT-X, TV Tokyo, Square Enix, TV Osaka, TV Setouchi Broadcasting (TSC), TV Aichi, King Records
Synopsis
Ko Ichinomiya's family motto is "Never be indebted to anyone," but after losing his pants and falling into the Arakawa River, he quickly finds himself in debt to his savior, the cutely insane Nino who happens to live under the bridge. To repay her, he vows to help her with her desire to "experience love." Along the way he'll meet the river's other residents, including a hot-blooded kappa, a Sister in drag, and a literal rock star.
Cast

Hiroshi Kamiya
Kou Ichinomiya (voice)

Maaya Sakamoto
Nino (voice)

Keiji Fujiwara
Village chief (voice)

Takehito Koyasu
Sister (voice)

Chiaki Omigawa
P-ko (voice)

Miyuki Sawashiro
Maria (voice)

Tomokazu Sugita
Hoshi (voice)

Chiwa Saito
Stella (voice)

Yu Kobayashi
Amazoness (voice)

Cho
Terumasa Takai (voice)