The upcoming Ranking of Kings: Yuuki no Takarabako (Treasure Chest of Coruage) anime has received a teaser trailer, April 2023 Japanese release date, and key visual. 

Ranking of Kings: Yuuki no Takarabako will depict events that were not shown in the main Ranking of Kings series, which aired from October 2021 to March 2022. The teaser trailer shows moments like Queen Hilling visiting Anne, a duel between young Desha and Ouken, and Bojji being approached by strange, colorful creatures.

The returning staff includes Yousuke Hatta as director, Makoto Fuchigami as chief episode director, Taku Kishimoto as series composer, Atsuko Nozaki as character designer and chief animation director, Yuuji Kaneko as art director, Satoshi Hashimoto as color designer, Noriyuki Ueda as photography director, and MAYUKO as music composer. Osamu Murata is replacing Maki Kawake as sub-character designer, and Kazuto Izumida is no longer serving as Ueda’s co-photography director. Wit Studio is the animation production company.

Ranking of Kings is based on the manga by Sousuke Touka, which began in 2017 and has 14 tankoubon volumes as of August 2022. It is serialized on Manga Hack with tankoubon volumes published under Kadokawa’s BEAM COMIX label. Booklive’s English release was suspended earlier this year due to typographical and translation erroes.

Crunchyroll describes the anime as:

How prosperous your nation is, how many powerful warriors it boasts, and how heroic and strong its king is. These are the criteria that factor into the system known as the Ranking of Kings. The main character, Bojji, was born the first prince of the kingdom ruled by King Bossu, who is ranked number seven. But Bojji was born unable to hear and is so powerless that he can’t even swing a sword. In consequence, his own retainers and the public, look down upon him as completely unfit to be king. It is then that Bojji finds his first friend, Kage, and Bojji’s life takes a dramatic turn…