Ranking of Kings: The Treasure Chest of Courage (2023)

When Bojji's training schedule is interrupted, Kage is sent shopping for the item that Despa needs to keep going. Despa sends Bojji and Kage out to earn some money, claiming that Bojji is too naïve about society to be a king, and could use some exposure.

Bojji and Kage camp for the night in the desert with the Order of the Underworld, where they must deal with the threat of wild beasts. Following a sandstorm, the group finds a secluded oasis, and encounter creatures the Order has never seen before.

After being thrown out of the kingdom, Hiling insists on enlisting Ann's aid to return and save Daida, but other matters keep Ann from joining her. A young Daida wants to learn how his mother is able to heal others, but finds it a tough skill to master.

Ouken's past is revealed as his desire to become stronger and put an end to his father's cruel reign is recounted. Over the course of the hard-fought war against the Gigantes, the prince distinguishes himself by his conduct, until one fateful day.

Fren is branded an outlaw when he leaves the underworld to help save Ouken. When Whiteking grows fat after the captain neglects to care for her, only one thing can whip her back into shape. Hokuro joins the military to repay Bojji's kindness.

Bojji, Bebin and Hokuro conduct a royal inspection of the town, during which Bojji insists on helping some children find their lost bird. After Daida becomes king again, he tries his hardest to live up to Bojji's example in leading the kingdom.

Before joining the Big Four, Bebin struggled to excel, and went to Despa for lessons on how to be a better swordsman. When infighting threatens the harmony of the Big Four, King Daida tasks Hokuro with finding a way to bring the group back together.

A young Kage is afraid of the world around him, but finds his courage when faced with a dangerous encounter. Shiina seeks for more strength, but comes to realize that the greatest strength of all is not directed inward, but is found when helping others.

Young Miranjo happens upon a child demon while playing in the forest, and lands in trouble when she can't find her way home. As Bojji prepares to leave the castle to look for Kage, he pauses to give gifts to those who have helped him get where he is.

As Bojji and Kage continue their journey together, Despa and the captain are tracking down Ouken's missing head. Meanwhile, Desha enters the Divine Treasure Vault, where he hopes to finally uncover the means to restore Ouken's humanity to him.