Kerbeus: Guard Dog of the Underworld!.
Valt has emerged as the winner of his first round at the local tournament. Shu finds himself shocked that the battle against The Boss ended with a Burst Finish. While Valt excites himself to begin his intensive training, he is invited by Nika and Tokonatsu to see a puppet show. But the contents of the puppet show was slightly unusual. And, as the second round of the local tournament begins, the opponent facing Valt is Kensuke Midorikawa, the puppet-controlling Blader.