The tutorial tower of the advanced player

Reading The tutorial tower of the advanced player manhwa, The tutorial tower of the advanced player manga with alternative name: The Advanced Player of the Tutorial Tower / The Master of Tutorial Tower / 튜토리얼 탑의 고인물 with Description: After being trapped for 12 years in a tower full of regenerating monsters, Hyeonu Kim is more powerful than just about any human or monster on Earth. Now that he’s free, he’s determined to find out who was behind his imprisonment, even if that means he has to kill hordes of monsters — and inadvertently save the world — along the way.