Lust Over Vicious Eyes

Agent Rex works for the government, as a spy detective. He takes on a case of V.D., a notorious serial killer which existed within another region's territory.

Unfortunately for him, V.D. was good in covering up his tracks. Too good, in fact, that the Knights of Favonius had to reach out to The Qixing for help. Of course, Agent Rex was expecting a challenge.

But not this. He definitely didn't expect a challenge which required him to work with Agent Childe, a new yet capable agent which seemed to get on his nerves.

But why does it always seem like this new agent was hiding something?