For an OVA this is surprisingly well done...a good, funny time worth watching if you liked Re:Zero. Plus, there's a Konosuba Easter Egg!
Re:Zero – Shorts (Break Time & PETIT)
Good short snacks of web-comic-flavored humor.
Isekai Quartet
The casts of Overlord, Konosuba, Saga of Tanya the Evil, and Re:Zero join in a Smash Bros. flavored crossover to experience...High school in Japan?
Re:ZERO -Starting Life in Another World-
Combine your average Isekai fun with the dread of Majora’s Mask and the psychological rattling of Doki Doki Literature Club.