Hengen Taima Yakou Karura Mau! Sendai Kokeshi Enka

A warning before you go try to find this anime: the only English subbed version that exists (as far as I’m aware) has some of the worst translations I’ve ever read. If you can’t understand Japanese and you don’t want to spend three hours trying to untangle the word salad at the bottom of the screen you might wanna skip this one. My best guess is that whoever subbed this fed the audio into an online translator and did not edit the output at all.

If you want to brave the incomprehensible subs anyway, this OVA is pretty solid. The music is a big highlight, ... it’s very 80s with lots of weird synths, it boosts the retro vibe which honestly makes the whole thing much more enjoyable. Hand drawn cel animation always has a certain charm to it. I can’t comment too much on the fine details of the story, because as I mentioned the subtitles are a disaster and my Japanese is terrible, but in broad strokes the main characters are likable and the central mystery is intriguing. The retro horror vibes are top notch, if you're a fan of J-horror inspired by folklore this is probably right up your alley. Mysterious deaths and schoolgirls fighting with psychic powers drive this story forward.

Your mileage will vary with this one. Check out the movie before you jump in the deep end with these OVAs, the movie is easier to find and the subs are much better.