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...
...shall we fight? 
هلاّ تقاتلنا؟
Bock auf einen Fight?
¿Combatimos?
¿Combatimos?
Tu veux bien ?
vamos lutar?
Сразимся ещё раз?