Apdo1

I personally sees no point for them to make these special when we have to wait for another episode of Re:zero. Aside from making a comedic like skit. Or prolly the studio's and the voice actor/artist ways of having fun from the overly intense voice acting that was required to do in the series. To either enlighten their mood after voicing those depressing scene in Rezero, but at the same time, giving some comedy to the audience of the related character in the show in a very cute form, or fun looking character designs. Similar to those short Tanaka kun special. Where each episode lastedpretty fucking short and have no real connection to the actual story. So it's not really necessary to watch this, and if you want to watch the anime with its serious vibes fully intact. I would recommend that you should just avoid watching these funny, comedic skit until you finish the entire episode of Re:zero season 1. But if you're into those kind of things, then go for it. These special and short episodes kinda destroy the overall perception of their character vibes given in the actual series itself. So i personally recommend to not watch this while season 1 of Re:zero is still incomplete.

Volvagia

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 ofa waste of time.