

Honoka arrived at home with snacks, juice and candies which are her brother's, named Hirokazu, favorite stuff. However, she noticed there has been an unexpected guest – Akazaki. She attends the same class as Hirokazu and for that matter he invited her for a study session and Honoka misunderstood her as his girlfriend. Will Hirokazu make up with his sister in a secret way while Akazaki is still in their house? Based on the adult manga by Yuzuki N'. (Source: BakaBT, edited)
This title is licensed in North America by Kitty Media as Sinful Sis.
Sinful Sis has 1 episodes.
Sinful Sis is currently finished airing.
Sinful Sis was produced by Studio 1st.
Sinful Sis aired Aug 29, 2014.
Sinful Sis is based on a Manga.
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