Story
OVA by Seven — Spring 2011, 4 episodes, Finished.
Based on the erotic game by Anime Lilith. The main character is a senior who attends Rinin High School; the only school among the mountain town of Rinin City. The main character, who is the student president of the high school, has another hidden persona. The persona as head of the “Gang Rape Club”... A dark ceremony existed that had been handed down for thousands of years in the old town of Rinin; the name of the ceremony, in particular, in the oldest of records.
Synopsis via AniList (English).
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