A Marvelous Devil

Seere never meant to be a "good" demon. Just a fair one. Thanks to this, he rose faster than any demon before him, proving that power didn't require cruelty. He wasn't a saint, just a dealmaker who kept his word, a cosmic force who believed demonkind could be more than Mephisto's brand of cruelty. Mephisto disagreed. When Seere grew too strong, too beloved, and too different, Mephisto struck him down. His body died. But his soul remained. It was too powerful to consume, so Mephisto cast it into the Void… exactly where Seere wanted to be. Because Seere had foreseen his death. And he had already made a pact with someone from the outside. Great Red. The Dragon of Dreams. — Description from novelcodex.org