Misaki Shiina is a character in the OVA series, depicted as a normal housewife and mother of two children. Her background establishes her family life prior to the central conflict. She suffers from severe myopia and requires corrective lenses to see clearly. This medical condition becomes pivotal when her landlord exploits her visual impairment during a transaction, transferring a significant financial debt to her without her full awareness or consent. Unable to repay the substantial debt conventionally due to insufficient funds, she is forced to service it through physical means. This compels her into a series of non-consensual sexual encounters orchestrated by the debt holder, depicting her use as a sexual object under duress to fulfill the imposed obligations. Her storyline concludes within this framework of coercion and exploitation directly stemming from the fraudulent debt transfer.