Hiruma, a twelve-year-old street-trained, eccentric, and abandoned child, is killed by a gas explosion caused by his carelessness. He awakens prisoner in the body of an eight-year-old. In a homicide-trained home where the masters secure their children's “brilliant” futures through bodily suffering and emotional wringing. — From his recently adopted wanker lifestyle to the whetting, dehumanizing, and gloomy power at his disposal… — The upsetting change, the nightmarish contrast, was an obvious extreme. However, the boy soon became aware of a critical issue: how was he to carve out his own free road when the dark path he should take appeared to have already been mapped out by those around him? After all, his hybrid “RPG-like system,” which could elicit sexual interest and mutual trust in creatures other than actual monsters, appeared to have spared him the gifts of coincidence and powerful magic.