a group of friends are killed during a one night celebration at the nearest diner in the city center of Kyoto. a man, Satoshi Ohno, wasn't killed during the event while a young lady, Fumi were partly crazy because her fiance was killed during the incident. inspector Sakurai Sho searched for the suspects of this case and he found several people that could be related to all of those killing. could the mystery be solved or still left with too many question hidden ?