A number of children are gathered for a celebration at Covenant Castle, including Hube and Nicola's son El, but things go crazy when El's magic powers are amplified by one of Anissina's devices!

Shori meets with Rodriguez, who requests that Shori persuade Conrad and the others to return to the Demon Kingdom, but when his attempts fail, he attacks Conrad directly!

Yuri's older brother thinks back to when Yuri was younger and the two brothers spent the day at an amusement park to get away from their feuding parents.

After Ulrike reveals that the final box is located on Earth, Yuri and the others travel there, meeting Yuri's family, who have known all along about Yuri's role as Demon King!

As Fransia forms an alliance with the Demon Kingdom and Conrad remains imprisoned, Yuri and the others seek to discover the reason for his betrayal.

After Ulrike reveals that the final box is located on Earth, Yuri and the others travel there, meeting Yuri's family, who have known all along about Yuri's role as Demon King!

With Fransia under Big Cimaron's control, escape is nearly impossible for Yuri as Conrad arrives and is ordered by King Belar to execute him!

Yuri heads for Big Cimaron, intent on convincing Belar to stop fighting. After battling through more puppets, Yuri discovers Belar is also being controlled and it's up to him to stop the mysterious puppet master!

After hours of chasing down the box, Yuri and the others track it to an old training ground, but are they walking into a trap?

Yuri heads for Big Cimaron, intent on convincing Belar to stop fighting. After battling through more puppets, Yuri discovers Belar is also being controlled and it's up to him to stop the mysterious puppet master!

Heathcrife helps Yuri and the others travel to a land called Fransia, where the next box is located, but Fransia's king refuses to pick a side...

Yuri joins the captured Wolfram and the pair are to be handed over to King Belar, but before this happens, their transport is intercepted by a magic user with incredible power that Yuri is no match for!

While Yuri tries to convince Murata to return him to the Demon World, Big Cimaron has located another Forbidden Box!

Yuri joins the captured Wolfram and the pair are to be handed over to King Belar, but before this happens, their transport is intercepted by a magic user with incredible power that Yuri is no match for!

Big Cimaron's King Belar declares Yuri's team disqualified and awards the win to his own country, but Yuri refuses to abide such disrespect to sporting competition and unleashes his power!

When Conrad's arm and Gwendal's eye begin to experience pain, a feeling of impending darkness washes over them as faceless puppets kidnap Wolfram, with Yuri giving chase...