Yuri confronts Murata about who he really is while the people of Caloria agree to receive help from the Demon Tribe.

Remorseful for his actions, Shori apologizes to Yuri while expressing his continued concerns over the sealing ceremony, but Yuri assures him it'll be fine as a strange power continues to escape the boxes...

The Great One reveals why Yuri was chosen to become the Demon King as the others all work in their own ways to free Yuri. As they prepare to fight him to stop the opening of the final box, a vision of Julia appears in Yuri's soul...

While practicing with his new power, Shori loses control, leading him into a showdown with his own brother! Can anyone stop them from hurting one another?!

Maxine returns and kidnaps Yuri in a bid to earn fortune and power, but quickly changes his plan and takes the maids hostage instead, but will he survive?

While practicing with his new power, Shori loses control, leading him into a showdown with his own brother! Can anyone stop them from hurting one another?!

Yuri is taken hostage by Adalbert, who demands to know if Yuri truly has Julia's soul, but he finds himself having to defend Yuri from Big Cimaron's soldiers as the island's volcano starts to rumble...

The castle is under siege as Lady Ondine's sister, Seraphine, attacks in the belief that she must destroy the keys to the boxes, which even brings her to Earth, where she faces off with Bob!

Bandits threaten a small town and Gwendal finds himself joining Conrad's father, Lord Dunheely, in helping the townspeople. Can Gwendal set aside his prejudice of humans for the good of the people?

The castle is under siege as Lady Ondine's sister, Seraphine, attacks in the belief that she must destroy the keys to the boxes, which even brings her to Earth, where she faces off with Bob!

Princess Elizabeth, the winner of the Great Demon Kingdom beauty pageant, is used by Stoffel to enact a plan to form a bond with Yuri, but she claims to already be engaged... to Wolfram?!

Shori finds himself pulled into the Demon Kingdom and immediately begins to question the sealing ceremony, and it appears his concerns may have merit!

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 finds himself pulled into the Demon Kingdom and immediately begins to question the sealing ceremony, and it appears his concerns may have merit!

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.

Günter teaches Yuri about the founding of the Great Demon Kingdom and the man known as the Great One as well as the history of the four boxes and the families that hold the keys to them.