The Dark Sister Controls the Brother

Takanashi Shusuke (Toyonaga Toshiyuki) Dubbing) is a hopeless otaku. Among the many H-comics and beautiful girl figures he collects, "sister" is an unavoidable theme. As Shusuke's younger sister, Takanashi Nao (voiced by Eri Kitamura) actually has a lot of affection for such a bad brother, so she seizes every opportunity to seduce Shusuke intentionally or unintentionally. The sudden appearance of childhood sweetheart Iroha Tsuchiura (voiced by Marina Inoue) casts a shadow on the relationship between the brother and sister. The enthusiastic and proactive Iroha makes the jealous Nao want to run away from time to time. Shusuke, who was caught between two young girls, felt very headache. At the same time, through various clues, he had doubts about his blood relationship with Nao. What secrets are hidden in Nao's life experience? Can the relationship between Shusuke and Nao be cultivated? It all depends on Xiuxu's fortune.