Yurī Chvojka(ユーリイ・フヴォイカYūrii Fuvoika) is an inexperienced sixteen-year-old Flame Haze boy who possessed the title of "Leader of Spirits". He maintained a contract with the Crimson Lord Valac, and goes by the title "Leader of Spirits"(魑勢の牽き手Chisei no Hikite).