step sister slave

Junko happily accepts her husband's younger brother, Daigo, who has come to Tokyo to prepare for entrance exams. Junko, who grew up as an only child, longed for a life with her brother, even if it was her stepbrother. Such joy is short-lived, but while her husband is away, Junko is raped by Daigo, who transforms into someone else. Daigo's demands escalate as if toying with Junko, who is tormented by secrets she is keeping from her husband. Junko begins to notice new feelings that begin to emerge as her guilt toward her husband fades.