(note, I'm more of a casual anime watcher these days, as I'm in my late 30's and find it harder and harder to find motivation and time to watch anime because so many are childish or too generic) Jujutsu Kaisen 0 was an excellent fun movie, shocked to see some of the reviews here. I highly recommend it if you're into JJK or good anime movies. If however you're into the generic high school animes with cringe forced drama, I don't think movie is for you.
It's a prequel so I wasn't expecting much in terms of developing the overall story but it was really fun to watch with a lot of feel good vibes and good action. Maybe I can agree there was a lot of flashbacks but it's a prequel movie, the whole thing is technically a flash back already. I wasn't crazy about JJK when the first season originally aired, I just thought it was decent. At the end of 2024 I was recovering from months in the hospital and while watching lots of memes I kept seeing scenes from JJK I didn't recognize and I didn't know if there was a second season yet, I had only heard about the prequel movie and decided to give it a shot and I really like it. Anime movies in general are much better paced than weekly anime that tend to have filler or time padding so they don't blow through the source material.
I've since rewatched JJK season 1 and I have a lot more appreciation for the anime now. I'm planning to start season 2 after writing this review and hopefully the quality keeps up.