Sakura-chan, a girl who decided to run away from home on Friday night due to her boyfriend's repeated cheating. The female friend she relied on was not captured, so she decided to stay at the house of a close male friend as a last resort. However, her friend, who she thought was harmless, is actually an extremely sadistic man! ? Exploiting the gap, her male friend develops her sexual sensibilities, and in the end, she turns into a depraved masochist...