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.

The morning after the sudden retirement announcement, the amusement park is labelled with notices for destruction, and Danji goes missing, leaving Yu-yu and the remaining Blackout members troubled. In order to keep the amusement park from destruction, Megumi sets out to meet someone.

Tohya appears once more at Wonder Hill with his partner Masanori, hoping to have another match against Danji. Danji wanted to accept the challenge from Tohya, but he has yet to sufficiently recover from his injuries the other day to cardfight. And so, Yu-yu challenges Tohya to a cardfight in Danji's place.