Yuuri attends a dinner party and meets more of the people who will make up his subjects. He accidentally challenges Conrart's brother, Wolfram, to a duel.
After gaining possession of Morgif, Yuri discovers that the sword needs to absorb souls for energy; Jozak tricks Yuri into taking part in a gladiator event.
Stoffel hatches a plan while Yuri is on Earth; Yuri meets his advisers; Ulrike warns Conrad of danger; Conrad and his soldiers investigate a number of incidents of villagers being attacked.
Stoffel and Raven begin their next move as Conrad, Wolfram and Yuri leave the castle to some soldiers; Conrad orders Wolfram and Yuri to stay put, but Yuri conducts his own investigation.
Yuri comes awake in Stoffel's castle and Stoffel tries to convince him to join his side; Gwendal and Stoffel prepare for war, while Jozak tries to sneak Yuri out.
Yuri attends a dolphin show and shakes hands with a dolphin, which transports him to the other world where he learns about an impostor thought to be the demon king.
Yuri and Gwendal enter the capital city of Svelera and meet a bride who has run away from her wedding. A young boy provides refugee for the trio as they avoid pursuers.
As Yuri and Gwendal are set to stand trial for Yuri's elopement with a demon, Yuri is sent to work in the esoteric stone mines while Gwendal is locked in a cell lined with esoteric stones.
Yuri finds Norica digging in the cemetery looking for her son. They discover part of the demon flute. Yuri and the others traverse the desert to escape the hostile forces.
News of the demon stone being stolen piques Yuri's interest as he studies and practices baseball with Conrad; Yuri sets off to find the stone with Wolfram, Jozak and Conrad.
After they enter the guesthouse to get rid of some monsters, the floors give way and Wolfram and Yuri plunge to the basement, where they meet some interesting creatures.
Alford discovers what it truly means to be a hero. Yuri and the others help the dragons find a new nest that will shield them from any poachers in the future.
A young girl arrives claiming to be Yuuri's illegitimate child, and then tries to kill Yuuri. Kind-hearted Yuuri thinks there must have been a good reason behind her actions.
Greta spots a man in town that she wants to see again so Yuui accompanies her into town, despite the fact that Conrad told him to stay put. A masked man attacks Yuuri.
Yuuri demands that Biron return everything he stole, and Biron says he will if Yuuri can beat him in a gambling contest. It will be a rare animal race between Biron's huge Goala and the giant Sandbear named KG.
Hube seems to be unwelcome in Makoku, and it has something to do with a woman named Julia. Greta tells Yuuri that Hube had once confided in her that he'd done something unforgivable.
Hube attacks Yuuri once again and Conrad defends Yuuri. Gwendal decides Hube must die for his crimes, but both Greta and Nicola do their best to help him.
Conrad ponders how life seems to move more slowly when Yuuri isn't around. He remembers a tragedy at the end of the 20-year war, and the time he went to Earth to deliver the Maou's soul to a certain mother-to-be.
Yuuri and Murata are introduced to Norman Gilbit, who is unable to talk because of an accident three years ago. Maxine and Adalbert arrive to discuss rumours they have heard.
Yuuri, Murata and Flynn are on a ship carrying passengers, cargo, and prisoners. The ship is headed toward Big Shimaron when it is attacked by Small Shimaron. Flynn, Yuuri, and Murata jump overboard, but they may not be any safer on land.
Yuuri learns of the Four Forbidden boxes that are said to bring destruction. Murata seems to know more about this world than he should, raising questions about his true identity.
It looks like Murata could be someone of importance. Conrad's arm may be the key to releasing the power of the box, but if it's not the right key, the box will become out of control.
Murata Ken is more than just Yuuri's friend, he also holds a high place in the Mazoku society. Gwendal arrives in Caloria with aid for the wounded and homeless. A messenger from Big Shimaron announces that the Ultimate Tournament is about to begin.
Yuuri is dying to enter the Ultimate Tournament, which is held every four years, but he must first win the preliminary race. From East Nilson to Lambeil, Yuuri battles to emerge the winner.
Wolfram takes the first fighting position in the Ultimate tournament. After his battle, Yosak fights Adalbert who has entered the tournament solely for a chance to engage Yuuri. Lady Flynn is captured and held in ransom of the team's forfeit.
Now that Lady Flynn is safe, Yuuri can fight the next opponent with all his might. His battle becomes complicated when someone he trusts fights for the other side, and as Adalbert joins in, Yuuri must fight for his very life.
King Belar Stefan declares Big Shimaron the winner of the Ultimate Tournament and orders Caloria's representatives arrested. Yuuri and the others are able to make their escape with the box of the winds in tow, but Conrad is not with them.
Murata helps Yuuri get back to the alternate world, and they find Wolfram, Günter, Greta and Ulrike there to greet them. Some facts about the Four Forbidden boxes are revealed, and they are informed that Big Shimaron is in contact with another Box.
Yuuri and his group travel to Cavalcade to meet Hyscliff, who can help them get into the secluded land of Fransia. Unfortunately, the king of Fransia refuses to take sides. Conrad and his Big Shimaron goons are also in Fransia after the box.
The king's helper Lyla takes it upon herself to show Yuuri and the others around and help them hunt for the forbidden box. After many hours of fruitless searching, Yuuri and the others are told the box has been found at an old training ground.
