The mysterious challenger Katsuki defeats Megumi and challenges Danji to a match, but Danji has a condition: to defeat Yu-yu first. And that's how Yu-yu started his special training with Danji for the cardfight one week later.

Deluxe—the tournament to determine the strongest in Vanguard! While invitations are being sent to top-tier fighters, Akina enjoys the cultural festival, when a mysterious man named Kagetsu Yakumo appears before him. Who could he possibly be…?!