"I'll definitely get big brother out of his room!" To save their shut-in brother Yuto, who does nothing but play games, four brilliant and sex-loving beautiful sisters have stepped up!? Mai, the eldest daughter and a friendly, outgoing college student, approaches him with a friendly bath-time scrub! Hana, the third daughter and a hardworking high school student, offers cute Kansai dialect and ear cleaning on her lap, while desperately researching handjobs! Natsuki, the second daughter and a serious black-haired beauty, accepts everything from China dress cosplay to wand massager masturbation! And Hikaru, the fourth daughter and a passionate baby-faced high school student, attempts a full-body persuasion with the forbidden proposal, "It's okay to do erotic things to me!" Charging into his room one after another, the sisters launch an intense and stimulating struggle using every trick in the book, all in their single-minded desire to get their brother back into society! A slapstick and erotic development begins with unexpected happenings!! With the sisters' extreme and overly deep love and powerful support, will the brother safely leave his room and return to society!? A non-stop, heart-throbbing family rescue documentary!?