First off, The story is great. It does its job well, introducing you to Higurashis true natrue perfectly. How we see Keiichi going batshit insane after finding out what happened in Hinamizawa is great as well. Secondly, The art. It is okay, i guess. It could do a lot of polishing, but when it needs to do its job, it does it well. Thirdly, the characters. Definitely the best part of Higurashi, they really feel like natural real life people, like people you know before. Also helps with moments where youre meant to feel really sad for the characters.
Overall, a good starting point to Higurashi. it does its job well, so no harm in checking this out if you wanna peep Higurashi. 4/5, 8/10 (Also id recommend reading the vn, its way better. Manga is still a great adaption, though.)
