Episode 90

"The Beacon of Revolution" (革命の狼煙 Kakumei no Noroshi) is the ninetieth episode of the Yu-Gi-Oh! ARC-V anime.

Synopsis
In order to protect Serena, Reira stands against the Obelisk Force by himself. Yūya arrives just as Reira’s strength is reaching its limits! Despite being exhausted from his duel with Crow, in order to protect Reira and Serena, Yūya begins a Duel. However, Barrett then arrives to aid the Obelisk Force. Willing to risk his own life to retrieve Serena, Barrett begins a Duel against Yūya!