I liked the break time specials. Yeah, they were not fantastic, but at least I got some interesting lore or interactions out of them.
Petit's shorts just feel like a precursor to Isekia Quartet where someone went hey we got these assets from Rezero and overlord why not get some more use out of them.
they all take place in some modern japan equivalent either a school, bookstore, the beach, or convenience mart, and typically involve the characters in some sort of joke skit.
they do not relate in any way to the main story
I did not particularly find these funny or interesting, More of a waste of time.