Kono Naka ni Hitori, Imouto ga Iru!: Ani, Imouto, Koibito
Japanese title: この中に1人、妹がいる！兄、妹、恋人
Alternative titles: Kono Naka ni Hitori, Imouto ga Iru! OVA, Kono Naka ni Hitori, Imouto ga Iru! Episode 13, NakaImo, One of Them is My Younger Sister! OVA, Who is Imouto? OVA, NAKAIMO - My Little Sister Is Among Them! OVA
Type: OVA
Source: Light novel
Episodes: 1
Status: Finished Airing
Aired: Mar 27, 2013
Duration: 23 min
Rating: PG-13 - Teens 13 or older
Studios: Studio Gokumi
Producers: Lantis, TBS, DAX Production
Licensors: Sentai Filmworks
Genres: Comedy, Romance, Ecchi
Themes: Harem, School

Unaired 13th episode of the TV series.