Every 6 month, there will be a murder happened in a City of Kyoto. It's been 3 years and police can't find the killer. Then, a girl with unexpectedly beautiful, natural glowing red eyes come to help the police to solve this mystery. With the help of Inspector Saito and his assistant, Yamada, will they be able to solve this mystery? Who's the people behind this continuous murder? Is there anything that related to her red eyes? Let's find out.