MIDE-579 I Am A Libido Monster … My Sister In Our House. A film that can be said to be Chimimi Ito's best. The story is about two sisters, the younger sister is in high school and the older sister Ito is unemployed. Because Ito's free time is too much, Ito's desire is always boiling. Even though Ito is very beautiful, no boyfriend can stand Ito's lust. Ito's younger sister has a classmate who is also her boyfriend. Today he came to the house to study in a group with his younger sister. However, while studying a little, a strange sound came from Ito's room. You all know what she is doing, right? The classmate was very curious... Then, with the graduation exam coming up, his younger sister asked the class president and class vice president to come to her house to study in groups and one after another, the lucky boys were accepted. Ito... .