限界深度2万メートル以上!?
人類最後の未踏の深淵には何があるのか…?
隅々まで探索されつくした世界に、唯一残された秘境の大穴『アビス』。どこまで続くとも知れない深く巨大なその縦穴には、奇妙奇怪な生物たちが生息し、今の人類では作りえない貴重な遺物が眠っている。
「アビス」の不可思議に満ちた姿は人々を魅了し冒険へと駆り立てた。そうして幾度も大穴に挑戦する冒険者たちは、次第に『探窟家』呼ばれるようになっていった。
アビスの縁に築かれた街『オース』に暮らす孤児のリコは、いつか母のような偉大な探窟家になり、アビスの謎を解き明かすことを夢見ていた。そんなある日、リコはアビスを探窟中に、少年の姿をしたロボットを拾い…?
細密で独創的な絵柄が魅力のイラストレーター界の鬼才・つくしあきひとが、待望の商業デビュー!!
幻想と機械が入り混じる大冒険活劇、第一巻がついに登場!!
An orphaned girl named Riko lives in the Belchero Orphanage in the town of Orth. The town surrounds a strange, giant hole descending deep into the earth, which is known as the Abyss. The Abyss harbors artifacts and remnants of civilizations long gone, and is, therefore, a 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 Whistles, one of them being Riko’s mother, Lyza, who is presumed dead after taking a “last descent” into the Abyss.
Riko’s longing in life is to follow in her mother’s footsteps and become a White Whistle. One day, she discovers a half-human/half-robot boy in the first layer of the Abyss and names him Reg (after a dog that Riko owned). Riko and her friends sneak Reg into Belchero and quickly welcome him into their close-knit group. Sometime later, a number of findings are made from the depths of the Abyss, including Lyza’s White Whistle and pages of discoveries and observations she had made, as well as a message presumably for Riko, stating she is waiting at the bottom of the Abyss. Riko, determined to find her mother, bids farewell to her friends and secretly departs into the Abyss with Reg as her companion.