Chili can’t dance. As in, he can’t dance with a partner; he has a tendency to step on feet or make too broad of gestures.
Luckily, it’s never been too big of a problem for him, because it’s not like he regularly takes any of his dates dancing… but shortly after he begins seeing Burgundy, she invites him to accompany her for some obscure relative’s wedding, because she doesn’t want her family to bother her about not having a boyfriend.
He and Burgundy have only been on a couple of dates by then, and this makes him surprisingly nervous, because he kind of likes her (a lot) and doesn’t want to make a fool of himself in front of her (and her family).
So who does he go to? The Dancing Connoisseur Cilan, of course.
Cilan, of course, is happy to assist – and he enlists Iris (who only begrudingly agrees to help) to be Chili’s partner, so Cilan can teach them both. Bad idea. They’re both completely useless together.
This results in Cilan and Chili dancing together, and Cress and Iris giggling off to the side.
But it’s worth it, because at least Chili manages to impress Burgundy at the wedding.