Sweet Evil // Childe x Kaeya

(This is the first random pairing my friend and I @krixxs came up with so lets see whose turns out better, go to his profile to see what he's doing)
Childe is ordered to gain intel on the knights of favonius by joining their ranks under the name of Chie. Kaeya, noticing a fellow vision user joining the ranks has caused him to grow interested in this new ginger that has just joined. He gives "Chie" harder tests, harder training, and keeps an eye on him. He begins to grow a liking towards the ginger, who seems to excel even more when things just keep getting more difficult. Childe has begun to have so much fun, that he has almost forgotten about the mission at hand. As their relationship grows closer, what happens between the fatui and knights of favonius? Will this keep them apart?