Hip hop dancer and ballet star au, pairing of your choice.
1 - Len is the ballet dancer because ice skating is great for the winter but he needs to get her out of the house year-round. She wasn’t as into ballet as she was into ice skating, so Len had to sign up alongside her. Except he was actually pretty good at it. That ridiculous flexibility of his joined with his increasing strength makes him surprisingly perfect, so he keeps it up. It’s good exercise. He’s still mostly a thief, though. Which is why the out-of-the-blue offer of a scholarship to university, specializing in dance, is so surprising. They’re even willing to overlook the fact that he doesn’t have his GED yet.
2 - Mick is Len’s partner through thick and thin, to hell and back. He admits he did not think the road to hell involved dance school but okay, whatever. Not like Len stops stealing shit just because he’s dancing all day. It takes a while for Mick to get bored (Len dancing in veeeery tight tights is a revelation for Mick’s sexuality, let’s put it that way) but eventually he wanders around and makes friends with some of the other people who look about his age and super awkward to be there.
3 - this is because hip hop is barely accepted as a ~legit~ dance style and they feel out of place. Mick is 100% for all things not accepted by the man and is happy to hang out with them. Eventually they coax him into trying their style of dancing. He’d feel awkward doing Len’s twirls and stuff, but this sort of gliding movements feel much more natural, like a really good fight set to music.
4 - Len gets a job straight out of college with the Central City Ballet. He starts as a background dancer, but his hair starts going silver early and the ballet director takes one look at him and goes “YOU ARE THE VILLAIN OF MY DREAMS” and Len is like “uh, okay?” and suddenly he’s maybe not the lead, but he’s second place to the lead and holy crap he gets paid HOW MUCH for dancing?
5 - Mick meanwhile has used the money from his heists to fund the group of people he liked so much in college to become a dance troupe of their own, doing all new choreography and everything. They start getting hired to back up hip hop stars. Increasingly famous hip hop stars. Very famous hip hop stars.
6 - Mick and Len spend a lot of time going “wtf happened we were just bopping around to the music!” at each other. They invite their mutual dance troupes to their wedding, which they film and put on the web because good lord you’ve never seen so much graceful clumsiness in a single room as you do when you get an entire ballet company and a high-end hip hop dance troupe drunk and trying out each other’s styles.
7 - their wedding video ends up starting an entirely new style of hip hop/ballet fusion that becomes insanely popular.