The Genius Wizard Who Catches Demons

'''[Character has been deleted.] I deleted the character I'd been raising for over five years. To finally defeat the last boss of [Devil Fantasy]. 'Baal'. "...I can just start over. I can do it." And then. [Special bonus rewards have been distributed!] "What? A mythical grade characteristic?" A golden opportunity had arrived. "This time for sure!" I'll raise the strongest mage and defeat Baal! The moment I thought that. [Welcome to Devil Fantasy.] I was thrown into a world teeming with 666 types of demons. Along with the 'special bonus rewards' I had just received! "...Alright, let's see who wins this." I was confident. Because I'm a 10-year veteran of this game.'''