Travel to another world and continue to be a boxer

In the midst of various events, the frustrated young man Ye Kai was transferred to a different world. With his natural fighting skills and the use of magic, he saved the kingdom he relied on, and was sung by bards as a boxer, becoming a world-famous hero. Ye Kai, who once returned to his original world, felt that the meaning of his existence was in the different world, and he descended into that different world again. ...