I actually think that the ML from The Promise is Qi Sheng from this story, the ML’s nephew
But the promise is alpha and beta world
And they didn’t talk about magic
Alpha and beta?
Sorry I was talking about another manga is about the manga kill my love ⁄(⁄ ⁄·⁄ω⁄·⁄ ⁄)⁄
Nice theory. After reading this I was also wondering where Fu Ao is. His character is really mysterious.
After reading this master piece I have come up with a crazy theory which is I myself doubting about it.
So basically this Fu Ao guy is really mysterious like he really is and in this story they mentioned about the underground dungeon in the story of "The Promise" damn we even get to see doctor X so yeah.... I was thinking Fu Ao is just a fake name and his real name is actually Jing Ye the ml of the so called "The Promise" they're looking pretty similar so maybe Fu Ao is still young in this story because ml calls him little Fu. Why I think Jing Ye is Fu Ao? Because in the other story, there's this thing Jing Ye has to unlock his true powers and he needed this key which is the song of reverberation so needed to go on a mission to seize it but failed so he have to come back to the underground dungeon to find another solution and so yeah.... I can't explain anymore! I'm out of English!