Yabai! Fukushuu Yami Site - Season 1

A brother named Ryou Tezuka responds to his sister's suicide, an event preceded by a mysterious fire and severe bullying. He abducts three girls to interrogate them through rape and torture, seeking answers for the harassment that led to her death. The captives are Yukawa Ayano, an actress in public entertainment; Inami Misuzu, a successful model; and Tsubaki Rina, who was ostensibly his sister's closest friend. A concealed journal also holds clues to a dark history.