Story
After spending nine years on Dungeon and Stone, the role-playing game that no player has ever beaten, Han-Su Lee finally reaches the dungeon of the final boss. As soon as he opens the gate, however, he suddenly sees a message that says his tutorial has been completed and finds himself in the body of Bjorn Yandel, a real barbarian within the game. An exciting adventure awaits him as he endeavors to abide by the laws of the fictional world!
Synopsis via AniList (English).
Preview
Promo video for this title.