Tsuyoshi works for a conglomerate company. One day, he is transferred to the Fantasien Department. The company owns a theme park called Fantasien and his job there is to work as a security guard in knight costume. Though he is confused at first, he enjoys working with pretty co-workers. But one day, one of his coworkers dies because of malfunction of the facilities and a strange message is sent to them something like a claim of responsibility. Is it Souichiro's work who created all systems of the theme park, but went missing just before it opened. A roaming white shadow. Is it a girl who committed suicide inside the theme park? Another murder case happens... All systems are controlled by someone unknown and a murderous battle now breaks out. Who? For what? Will Tsuyoshi be able to solve the mystery? [From Erogeshop]

A series of strange disappearances occurs in Zeroshiki Department Store, one of the largest shopping malls in Japan. The management is concerned and unwilling to involve the authorities. For an unknown reason they turn to one of their salesmen, a young man named Kuniharu Shitaku, requesting him to investigate the case and find out who or what is behind these disappearances. Kuniharu must explore the mall and gather information by talking to shop managers and staff, most of which are attractive young women who may not be what they seem at first glance. [From [url=http://www.mobygames.com/game/ryki-no-ori]Mobygames[/url]]