Fairy Tail : Cocytus Chimera

They tried to cage a Dragon, a Demon, and a God in a single mortal vessel. They failed.

At fifteen, Killian is a walking apocalypse of absolute zero. Haunted by the remnants of Project Cocytus and the three ancient entities warring in his mind, he isolates himself in a frozen forest near a neighboring town of Magnolia to protect the world from his own existence.

But Fairy Tail doesn't abandon its own. When a stubborn Solid Script mage shatters his broken seal to forge a new one, she accidentally awakens an impossible magic. Two years before the guild makes history, the Chimera found home.