Kawabuchi is a town where junior high school students drown one after another, it's also well known for a town where people die for 100,000. Ryuusei is a 13 years old boy who started to live there with his father after the early death of his mother.

"The emperor must be slowly destroyed from within." The assassin So-hwa enters the palace as a court lady to seduce the tyrant Emperor Yugeon. However, Yugeon suffers from mysophobia and a severe mental disorder, refusing to let any woman near him. "