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.
Jun is a girl whose words have been sealed away so that she cannot hurt anyone with them. But, one day, she is nominated to become an executive member of the "community outreach council." On top of that, Jun is also appointed to play the main lead in their musical...
