Ranking of Kings: The Treasure Chest of Courage

Ranking of Kings is a Japanese web manga series written and illustrated by Sōsuke Tōka. It has been serialized on Echoes' user-submitted Manga Hack website since May 2017 and has been collected in 22 tankōbon volumes by Enterbrain. The story follows the adventures of a little prince named Bojji, who was born deaf and tiny in size, and his friend Kage, a survivor of a wiped-out assassin clan, who understands Bojji's words despite him being unable to speak.