It's certainly worthy that "8.69" rating on MAL. The interactions between both MCs are among some of the best I've seen in a romance anime; right up there with "My Dress-up Darling".
To give a brief, spoiler-free summary, it's a tale of forbidden love (á la "Romeo & Juliet") between two high school students whose schools hate each other.
Ill make sure to add this to anime i need to watch