Oneechan ga Kita
Japanese title: お姉ちゃんが来た
Alternative titles: My Sister Came, Onee-chan
Type: TV
Source: 4-koma manga
Episodes: 12
Status: Finished Airing
Aired: Jan 9, 2014 to Mar 27, 2014
Broadcast: Unknown
Duration: 3 min per ep
Rating: PG-13 - Teens 13 or older
Studios: C2C
Producers: Takeshobo, Studio CHANT
Genres: Comedy, Slice of Life

The story revolves around Tomoya Mizuhara, a 13-year-old boy who suddenly gains a big sister when his father remarries. 17-year-old Ichika is a little strange, and her affection for Tomoya is rather overwhelming, if not scary. On top of things, Ichika's friend Ruri is the ultimate sadist. Then there is Ichika's big-breasted quarter-Japanese friend Marina.

(Source: ANN)