When Odamori and his classmates meet a tragic end during a field trip, he agrees to a mysterious man's proposal for reincarnation. Little does he know that his newfound role as a 'Slavemancer' grants him the ability to control and manipulate others, a power he embraces. As his dark deeds draw the attention of a Princess Knight, who happens to be a former classmate, Odamori plots a surprising twist for their inevitable encounter.