KTRA-363 — The Daily Life Of An Adolescent Sister Seducing Her Herbivorous Brother. Iroha Minami

This is an incest story between the cheerful, proactive, devilish, slightly sadistic little sister "Iroha" and her slightly quieter brother. The more the little sister thinks that there is a line that must never be crossed, the more excited and fired up she becomes. She uses every trick in the book to seduce and make her "serious" brother fall for her with her insane, lewd provocations! Gradually, the brother's reason crumbles, and in the end, he gets what his "devilish little sister" wants...!?