Made in Abyss  The story follows an orphaned young girl, Riko, who finds and befriends a humanoid robot Reg and descends with it into the titular "Abyss", that leads deep into the Earth, in hopes of finding her mother. An orphaned girl named Riko lives in the Belchero Orphanage in the town of Orth. The town surrounds a strange, giant hole going deep into the Earth, which is commonly called the Abyss. The Abyss harbors artifacts and remnants of a civilization long gone, and is therefore the popular hunting spot for so-called Cave Raiders, who undertake arduous and dangerous descents into the mist-filled pit to recover whatever relics they can find. Returning from the Abyss can be dangerous as "the Curse of the Abyss," a mysterious and potentially fatal malady, manifests upon ascension. The deeper one goes, the more acute the effects of the curse; few who have descended into the lower regions have returned to tell of their experiences. Some legendary Cave Raiders earn the title of White Whistle, one of them being Riko's mother, Lyza. Riko's longing in life is to follow in her mother's footsteps and become a White Whistle. One day she discovers a robot resembling a human boy in the Abyss and names him Reg. Riko and her friends sneak Reg into Belchero and quickly welcome him into their close-knit group. Some time later, a balloon reaches the surface from the depths of the Abyss containing pages of discoveries made by Lyza, as well as a message for Riko stating she is waiting at the bottom of the Abyss. Riko, determined to find her mother, bids farewell to her friends and departs to the Abyss with Reg as her companion. Akihito Tsukushi began serializing the manga on Takeshobo's "Web Comic Gamma" website in 2012. Since then, the series has been compiled into eight "tankōbon" volumes. Seven Seas Entertainment announced during their panel at Anime Expo 2017 that they had licensed the manga. A manga anthology, titled , was released on July 29, 2017 (). On December 13, 2019, Seven Seas announced they had licensed the book with plans to release it in September 2020. The translator of the anime for Sentai Filmworks, Jake Jung, also adapted the manga for Seven Seas. Regarding his involvement in the English version of both media, he stated, "Made in Abyss is chock-full of terminology, so I hope fans of both media are able to enjoy a seamless experience."