I recognize the artstyle and the setting though. I believe it’s related to the Song of Reverberation lol. I think Fu Ao comes from the underworld laboratory since he said it was being controlled by extremists, which is Rockefeller. But since An Nuo lived in the laboratory for 18 years, and I assume that he has experienced these tests the entire time, does that mean that Fu Ao has been gone for 18 years? Or the situation of the people at the bottom never changes? And how does the timeline of The Promise and Song of Reverberation overlap? Were they both happening at the same time? Since Fu Ao wasn’t seen at all during this story, does that mean he received the news of the underground after everything was over? Anyway this author is so good at making stories!! <33333
Poor Mishi :(