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...
It's a lineup of four rear-guards! 
Just what is he planning?!
Er hat vier Karten zu einem
Rear Guard aufgereiht. Was hat er vor?
Nada menos que cuatro rear-guard.
¿Qué piensa hacer?
Nada menos que cuatro rear-guard.
¿Qué piensa hacer?
Il a 4 alliées sur le terrain !
É um paredão com quatro defesas!
O que ele pretende fazer?!
Целых четыре арьергарда!
Что же он задумал?!