One Day, Our Family Welcomed In A New Member, A Little Stepsister, Who Turned Out To Be A Big Tits Sexual Monster, And Now, Me, My Little Brother, My Dad, And My Grandfather All Got Our Brains Fucked Out By Her. Hotaru Nogi

ある日、新しく家族に仲間入りした巨乳で性欲モンスターの義理妹に僕・弟・父・おじいちゃん全員犯される。