Current user rating: 89/100 (200 votes)
Plot Synopsis by AsianWiki Staff ©
Mitsuki (Tenka Hashimoto) and Yuya (Yukichi Kobayashi) become stepsister and stepbrother because of their parents' marriage. Mitsuki can't get along with her new family and Yuya doesn't know how to approach his new stepsister. One day, Mitsuki becomes possessed by the spirit of Hiyori (Mayu).
Hiyori likes Yuya and believes Yuya can help her get to heaven. Hiyori places a leather chastity belt upon on Mitsuki and a plan takes place to help send Hiyori to heaven.
- Based on manga series "Saikin, Imouto no Yousu ga Chotto Okashiin da ga" by Mari Matsuzawa (first published November 9, 2010 in Fujimi Shobo's Monthly Dragon Age).
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