Ranking of Kings: The Treasure Chest of Courage

Ranking of Kings: The Treasure Chest of Courage (王様ランキング 勇気の宝箱) is a spin-off anime series of Ranking of Kings, produced by Wit Studio and aired in Japan from April to June 2023. This series is presented as a collection of short stories, showcasing past experiences of protagonist Bojji and Kage, as well as other characters, and exploring their courage and personal growth. The stories are based on bonus chapters from the manga, with some original content added. In the anime, the main characters Bojji and Kage embark on new adventures again, encountering a series of interesting challenges, such as researching the underworld and attempting to make money. Apart from the main characters, the anime also focuses on other characters' stories, including Hiling's old friend, Daida's magic practice, the three immortal brothers, the rules of the underworld, and other characters’ inner struggles. The entire series conveys the courage and growth of the characters when facing difficulties through a warm atmosphere and humorous segments, further expanding the worldview of Ranking of Kings.