Episode 125

"The Blazing Dragon" (烈火の竜 Rekka no Ryū) is the one-hundred and twenty-fifth episode of Yu-Gi-Oh! ARC-V anime.

Synopsis
As Yūya and Yūto try to save Ruri, Serena appears before them. As according to the Doctor's plan, the Parasite Monsters drive Yūya and Yūto into a corner. Then, something abnormal happens to Yūya! As two dragons appear on the Field, Yūya sports a demon-like expression on his face! While emitting a black aura, Yūya begins a merciless assault against Ruri and Serena!