You’ll definitely be seeing more of Crown going forward! He absolutely has a “stage face” vs his normal grumpy scrungly self. And yeah it is Crown that thinks Ravy x Kavir being in relationship while working together is a bad idea.
As for Kavir, we’ll be seeing more of him in Ch 4 to better answer your questions about that. The short summary is that Ravy x Kavir are indeed close but have a complicated relationship.