Based on Luo Xiaohei's worldview, centered on the core theme of "balanced reconstruction and individual belonging", it connects the three lines of "past echoes - current crisis - future choices", supplements the hidden pasts of Infinite, Laojun, Xuanli and others, and expands Xiaohei's growth arc under the proposition of "human-monster coexistence". It will definitely be different from the original work and animation. You can think of it as a side story.