Shun delves deeper into the twisted dynamics of the Jounouchi household, engaging in hedonistic encounters with Shizuru, Tsubame, Hina, and Tsugumi. As he navigates their obsessions and Hina's use of a love drug, he uncovers the grim secrets of the manor's detached room and a legacy of murder, replacement, and forbidden bloodlines. The episode suggests that Shun's own traumatic past as an orphan may be inextricably linked to a hidden vendetta against the family.