Synopsis

In a time when most secrets in the world have been found, there’s still one hidden place – a giant cave network named Abyss. People who dare to explore its deep pits and twisty tunnels are called Cave Raiders. A young orphan named Riko dreams of being a Cave Raider, just like her mom. When she meets a peculiar robot while exploring the Abyss, she’s one step closer to her dream!

This story also includes a 4-chapter side story titled “How Are You? Somewhere.” It was nominated for the 11th Manga Taishou Awards in 2018. (Source: Seven Seas Entertainment)