Childe, Tartaglia, the Eleventh of the Fatui Harbingers, is the only Omega to ever attain the rank, with a certain condition: if he is ever defeated by an Alpha, he will become their mate. No Alpha could ever defeat him, until a certain former god swiftly crushes him.
However, Zhongli refuses to mate him! Insulted, Childe decides the only thing to do is to court Zhongli as an Omega, which he is terrible at being, to reclaim his hurt pride and win this game of love once and for all.
May the best player win!
emotionless Tartaglia x Zhongli who tries to help him express himself and get a life.
Or,
Tartaglia has been weighed down from the past since the beginning, Zhongli has to teach him how to feel again (and get a life!!). Also, a heads up, Childe isn't mute in this story. He just doesn't talk like that one quiet kid-
There are spoilers in this fanfic btw. More specifically, the archon quest in Liyue. Aka the "Farewell, Archaic Lord" quest and "A/The new star approaches.