Deep Insanity: The Lost Child is a 2021 anime directed by Shin Oonuma. The series aired on October 12, 2021.
Synopsis
The world is overrun with the mysterious "Randolph syndrome" that causes sudden comas. Simultaneously, a massive underground realm called "Asylum" was discovered at the South Pole as the syndrome's origin. Weird creatures, unlike any on the surface, dwell there with previously unknown natural resources. To cure the Randolph syndrome (and to get rich plundering the creatures' genetic data and underground resources), people set foot in the Asylum. Daniel Kai Shigure who heads to the very edge of Asylum with a certain wish.
