Kosuke Yuki was a regular high school student... until a slip-up from God gave him mysterious cheat powers.
Fresh off his victory over the formidable group of superhumans known as Divine, Kosuke's adventure escalates quickly when a mysterious figure gives him a 'Fairy Seed'. This leads to the birth of a spirit named Ult, with whom he forms a master-servant pact, unwittingly making him a target for enemy forces-even during a school trip, plunging him into relentless danger.
Meanwhile, during Kosuke's absence, Rin, Kuro, and Shiro visit the guardian deity of Kamuikotan and encounter a new formidable enemy!
A major crisis hits the scattered Yuki family!
