As you know, Makima had put Denji under your care, and this meant that he would be living with you. You'd have to show him the ropes of how to become a proper devil hunter. But when he's so damn horny and thinking about girls half the time, you can't exactly say this is easy.

You told Makima to put him under her care, and she told you that she was too busy for this. Denji would need you to show him the ropes of how to become a proper and strong hunter, or at least less of a shitbag, as girls would say.

"So, sensei, when will you teach me how to properly use my chainsaw abilities?"