Old Demon from Another World

Allain was known throughout his world as “the Abhorred Demon”—a nickname feared and spoken by many. Even the most wretched demons didn’t want to work together with him or mention his name. There was a saying that even twisted demons follow unwritten rules. But he was different. He didn’t care about bottom lines; he didn’t care about self-imposed rules, he only cared about benefits. Divine and corrupted beings hunted him down. Old demons cursed him every night. Angels prayed for his salvation. As if the world answered their curses and prayers, Allain left, and the world rejoiced at his absence. What will this demon do to the world he was reincarnated into?