Made in Abyss (Japanese: メイドインアビス, Hepburn: Meido in Abisu) is a Japanese manga series written and illustrated by Akihito Tsukushi. It has been serialized online in Takeshobo's digital publication Web Comic Gamma since October 2012, and has been collected into eleven tankōbon volumes. The story follows an orphaned girl named Riko, who finds and befriends a part-robot boy named Reg, and descends with him into the titular "Abyss" that leads deep into the Earth, in hopes of finding her mother.