I have NOT read the manga. This review is for those who will not read it/have not.
If you think you would enjoy an emotion filled story about a kid who decides to do art way after his peers have, watch this. Is the manga better? Most likely but this is often the case anyways. I loved the story, I loved the characters, I loved the inner conflict that every single character is shown to have. If you end up relating to a character's story then you might end up crying.
I rate things on how much I enjoyed them and although I feel like some characters could have been more developed if there were a few more episodes, or that the opening and ending songs weren't spectacular, this anime is a good watch! These negative and harsh opinions I think divert someone from a good story because it does not hit every mark and expectation they have.
It is NOT boring or flat unless this kind of anime is not for you.