Zhe, an S-rank Proxy known by the codename “Abyss Observer,” can sense the “emotions” of Hollows. He prefers to work alone, until he meets the woman called the “Chosen One.”
Yixuan, the core weapon of a mysterious organization, has a power sleeping within her that shares the same origin as the Hollows. Every “command” she gives shortens her life.
When the Proxy and the Chosen One meet in the abyss, the wheels of fate begin to turn. A missing Proxy, Hollows running out of control, and a truth buried from view: every clue points to the same answer. Yixuan is both the key to saving the world and the switch that could destroy it.
Zhe doesn’t want her to sacrifice herself.
For the first time, Yixuan wants to live for herself.
In the deepest part of Hollow Zero, they must find a third path, using the bond between them to rewrite the ending that was already set.