Mari has decided to live with her father-in-law and brother-in-law due to her mother's remarriage. Such a newly created brother-in-law happened to be at the same school as Mari. A soft and gentle brother-in-law gradually reveals his true nature in a communal life. The sexual desire that I couldn't stand was decided at night. And Mari is mercilessly criminal all the time at school ● Continues to be! Mari's intracerebral rejection and physical cum that never falls! Introducing a new series of villainous outrages with no escape!