Hero is a detective, but he has so few requests that his main occupation is a part time work at sports accessories store. In a gym equipment room he discovers a hanging mummified corpse. According to victim's older sister Makoto, her brother was alive just a while ago. Together with Makoto you are to discover the truth behind this suspicious case. Quite a light ADV detective work more about girls than about mystery. Hero investigates hand by hand with a partner girl and it's possible to choose between two assistant girls. There are many other girls on the way as well. There's also strong NTR presence.