A world where "stone" is at the center. Akaboshi, an ore craftsman visits an underground village and meets a boy whose left foot is petrified. The boy's goal is to find the man with a three-line piercing but he holds a secret...?! The two of them set off on a journey to save his family! (Source: MANGA Plus)

Aragane no Ko ranked 17th in the Best Web Manga category at the seventh Tsugi ni Kuru Manga Awards in 2021. It was nominated for the same category the following year. The series was published digitally in English as Diamond in the Rough and in Spanish through MANGA Plus. It has also been released in German by Altraverse since March 20, 2023.