Before going on epic roadtrip with his bros, Prompto has to finish his training with Kingsglaives. It appears that gunners are really rare and that makes Prompto super attractive. His ongoing personality is also a plus. So, all Kingsglaives we know from the movie try to make a move on him.

+ oblivious Prompto
++ jealous Noctis who realize he has a huge crush on his best friend