This is honestly a very good 'reply' to two plots we've seen in the manga. The first one already mentioned how during the Music festival they both admitted they'd never ever be friends with each other naturally.
The second part is that it was Clara who came over to Azz's house with Iruma-watching stuff. A kotatsu, food, drinks, etc. She was the one who put herself out there to be friendly to Azz, even when left behind by Iruma. But Azz didn't do anything back. I'm looking forward to the day Azz goes to Clara's house!