Kogami and Dante 🤔?
This one, I like!
So, how could the relationship between a mature men with bad experiences and a dork uncle with bad experiences be? let me tell you.
What's certain is, that Dante and Kogami are training partners. Kogami tries to become even stronger by fighting against Dante's Demonform in a bare fist fight. And it really helps, they both respect each others strength a lot! (And yes, lil choco sits in the first row being flustered watching those two fight)
Otherwise, they both talk a lot about books and their jobs. They give each other some advice how to handle with which kind of enemy. But Kogami often facepalms about Dante's stupid jokes and him being not that serious all the time. He just can't imagine that this halfdemon, who suffered through so much, can be like this.
But both respect each other a lot, and Dante gives Kogami his free space when he needs it. The halfdemon might be a dork, but he isn't an a-hole.
Bonus: Whenever possible, Kogami drives Dante to certain locations. He's worried the old demon might cause chaos on the streets with his wild driving style and his hellish motorcycle, even tho Kogami tends to drive like this woth his car from time to time as well.