Strange Guy Fighting in Another World

Hard-core legendary players are reincarnated into the world of swords and magic, and they can level up just by fighting. What skills can be obtained by defeating the fire elemental mage? "Who is that? The guy in the red robe." "Me?" "Yes! It's you. You're so handsome. I can't stand it, so I challenge you." "Who is that? You're too tall, come here and let's have a fight."