The New Gate Vol. 5 (manga)

After defeating the final boss in THE NEW GATE, the online game's most powerful player, Shin, is transported to another world just like the in-game world. This time he reunites with a support character, Girart. Girart, after realizing that his life is nearing an end, has been seeking out a one-on-one duel with Shin, his former master. The result is a match that pits the legendary Beastking against the game's strongest player--a fateful duel that will make the very earth shake!