Hyakki Ryouran Mansion

Aoyama Yoshito, a university student in folklore studies, becomes lost on a mountain and discovers a Western-style mansion belonging to the wealthy and noble Mikado clan. Invited to stay, he is drawn into the "Rite of Shadow Offering"—a mysterious ceremony to determine the clan's next leader. Surrounded by the three Mikado sisters, rival candidates, and the mansion's enigmatic residents, Yoshito navigates a complex web of dark secrets, ancient traditions, and hidden desires. The game features multiple story paths and endings as his choices shape his fate within the mansion's walls.