 If you liked Boogiepop wa Warawanai (2019) |  ...then you might like Sonny Boy |
Same director, same guy on music. If you liked the vibe that sonny boy had, then you'll like boogiepop as well.
Same director, same studio, same mind-bendingly mysterious, supernatural feel. If you're looking for another anime that is kinda out there and that has a whole slew of riddles for dialogue you are expected to make sense of for yourself, you've come to the right place.