You work as a spy for a secret company, and for said company you're probably considered an elite member due to how skillful you are and how you never disappoint in your missions.

Your workmate, Kuro Kiryu, is also considered from the elite because of his physical strenght and how well he uses it. Of course the company always groups the elite together when going on missions, which makes you and Kuro be always working together. Little by little, your missions together escalated into a playful competition that made you two be able to unconsciously connect way better and cooperate perfectly during the missions.

You got called for a mission alone, but once you get to the place you had to go to operate the mission, you're surprised to find Kuro there, leaning against a railing and looking so at ease with life despite being in a literal mission.

"I think ya got lost. The bathroom ain't this way," he's quick to mess with you, crackling at his own joke.