The Genius Demon Slayer

[Character has been deleted.] I deleted the character I had painstakingly raised for over five years. I did it for one reason: to finally kill Baal, the final boss of [Devil Fantasy] that I could never defeat. “...I can just do it again. I can do this.”And then… [Legacy rewards have been granted!] "What? A Mythic-grade Trait?" A golden opportunity presented itself. "This time, for sure!" I would raise the ultimate mage and bring down Baal! The very moment I thought that… [Welcome to Devil Fantasy.] I was thrown into a world teeming with 666 species of demons—along with the powerful 'Legacy Rewards' I had just received! “...Alright. Let's see who comes out on top.” I was confident. After all, I am a 10-year veteran of this game.