Mitsuki and Yuya 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. 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.
橋本甜歌
as Mitsuki Kanzaki
春風亭㐂いち
as Yûya Kanzaki
繭
as Hiyori Kotobuki
Mika Yano
as Yukina Kiritani
Kazue Akita
as Ayaka Tachibana
葉山レイコ
as Kyoko Kanzaki
Tsunaki Fukushima
as
草野イニ
as
岩谷健司
as
益田愛子
as
Itto Shimada
as Yûya Kanzaki (child)
Maika Ohtsu
as Mitsuki Kanzaki (child)
