After Battle With Werewolf Demon Next Day Ai Meet Haruka Luciela Who Is Introduce Herself As Sacred Slayer Special Agent Then Haruka Become Ai Guardian And Mentor So He Is Take Permission From Ai Dad Who Is Also Police Chief Then She Explain Ai About Sacred Slayer Organization Earth Divide Into Three Realm Demon Realm,Human Realm And Divine Realm So Demon Live In Demon Realm But Some Time They Are Try To Conquer Human And Divine Realm Then God In Divine Realm Give Some Divine Power To Human To Fight Against Demon Previously Ai Mother Was Become Sacred Slayer To Protect Human Meanwhile Several Bike Riding Demon Attack On City So Haruka Is Got News And Take Ai On Her Car Drive To The Location There Ai Transform Into The Sacred Slayer And Use Her Power To Defeat The Demons