In Yu-Gi-Oh, but Mechanical Ascension (1-148).

Summary

Hai Ma Lai Ren and Malik engage in a high-stakes duel, wagering their powerful "God Cards." Despite concerns from his brother, Hai Ma Lai Ren confidently accepts the challenge. As the duel progresses, You Feng appears to be in a dire situation, but he surprises everyone by activating a Continuous Spell card, transforming monsters on the field into Machine-type. This allows him to summon the powerful Chimera Fortress Dragon and boost its attack points to 4000, ultimately delivering a devastating blow to Malik. After Malik's defeat, You Feng shows mercy by refusing to use the full extent of his power against Malik, instead allowing him to leave with his sister, Isis. Kaiba Seto, intrigued by You Feng's abilities, retrieves the God Cards and hands them to Katsuya Jonouchi, expressing his desire to see You Feng's true strength in future battles.

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