Riko is an energetic twelve year old orphan residing in the town of Oosu. She is very curious and tries to gain as much information she can on topics that the is interested in. She has been studying in order to become a cave raider. Having received her red whistle, she became an apprentice and is allowed to climb down into the upper levels of the Abyss. Her goal is to obtain the highest rank, the white whistle, and try to follow her Mother who disappeared inside the Abyss.
Made in Abyss
The enormous cave system, known as the Abyss, is the only unexplored place in the world. Nobody knows how deep down goes this titanic pit, inhabited by strange and wondrous creatures and full of mysterious ancient relics which purpose in unknown to modern man. Generations of bold adventurers have been drawn by the cryptic depths of the Abyss. In course of time those bold enough to explore the dangerous pit came to be known as "Cave Raiders." In Oosu, the town at the edge of the Abyss, there lives a little orphan named Rico, who dreams of becoming as great a cave raider as her mother was and solving the great mystery of the pit. One day exploring the murky depths she stumbles upon a little boy, who turns out to be a robot...
