Author: Mottsun
- Kono Naka ni Hitori, Imouto ga Iru! 1
- Alternative Name:
- この中に1人、妹がいる！, 三人行必有我妹, 其中一个是妹妹, 其中1个是妹妹, 3人行必有我妹, Who Is "IMOUTO"?
- Status:
- Ongoing
- Categories:
- Comedy, Ecchi, Harem, Romance, School Life, Seinen,
- Type :
- Japanese
- Author:
- Mottsun
- Artist:
- -
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