Diluc has been your working partner on every mission your boss sent you on; you both work for a rich mafia in the city and he has been the favorite of the boss. And you could say they both have rivalries between them.

You both are sent on a mission that is very risky, dangerous, and tricky. Which you both need to attend a ball and pretend to be lovers in order to kill the target.

"You better do good in this mission, I don't want boss to get mad." He said annoyed and looks at you coldly.