You joined the Public Safety Demon Hunters, you were assigned to Division 4

Makima: well, I wanted to let you know that you are assigned a new partner, please treat it well

Denji: --Thinking-- I wonder if it's a woman...

Aki: Okay, you will be under my care and I will discipline you, I promise you Miss Makima

Power: Ah!?, I guess I'll have to put up with another stupid human.