'Masterpiece' is the only word I can use to describe this manga. The story is driven very well, mixing emotions perfectly. The character's self-improvement is also interesting; if I were the protagonist, I would have died right there. This manga made me feel what the protagonist feels. I cried a lot; the way the author conveys the message through the manga is very awesome. It's an absolute 10/10 for me, and no one can change my mind. This might be the best manga I've ever read.
Each character have their own story, which is good. Art is fine, I do like the cover a lot. I'm very recommend you to read this manga.