Who let him play Yu-Gi-Oh! (1-460).

Summary

You Xuan defeats the Demon King in a duel, showcasing his superior skills and strategy that nullify the Demon King's graveyard-based tactics. Despite the Demon King's experience, he feels humiliated by the loss. After the duel, You Xuan interrogates the Demon King about his employer, Xin Duo Ma, and demands he contact them to confirm the task's completion. The Demon King reluctantly agrees, realizing his life is at stake. You Xuan then admonishes him for using dueling monsters for evil and demands he relinquish his deck, leading the Demon King to contemplate his fate and consider betraying his allies in a moment of desperation. Ultimately, he connects with Xin Duo Ma, planning to turn the situation to his advantage.

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