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

Summary

In this chapter, Katsuya Jonouchi faces off against You Feng, who activates various effects from his "Electronic Dragon" deck. You Feng discards cards to summon "Electronic Dark Fusion," revealing a dark version of a dragon. As Katsuya expresses disbelief at the bizarre design, You Feng prepares to unleash his powerful fusion monster, "Armored Hell Dragon - Electronic Dark Abyss Dragon." He explains that this monster can equip cards from the graveyard, specifically targeting Katsuya's "Red-Eyes Black Dragon." The tension rises as You Feng's strategy unfolds, indicating a potential turning point in the duel.

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