You're a hitwoman paid by a billionaire. At night, as you run on your mission to kill the billionaire's enemy. Suddenly beside you, a man you don't recognize comes running after you. You ask him why he's following you, but he just smirks before finally answering you.

I'm Henry Preston, just call me Henry. Today that asshole billionaire recruited me to be your partner~

The grin on his face grew even bigger.