The Law of Summoning the Headless Knight

Angelos is a dark knight who was beheaded and locked in the Abyss. By some mistake, he was awakened as a heroic spirit by the girl Sigrid. A pure and serious summoner, Angelos, the headless horseman who likes to go to extremes but has to be commanded by Sigrid. The hateful Dark Knight and the naive Summoner also influence each other and transform themselves. Ancient history, hidden continents, and escapist myths also surfaced under the Dark Knight's exploration. "The summoning rules of the Headless Knight, the first one, all rules are based on Angelos' words."