(Average) Forest of Piano

NOTE: I watched this series in English.

Series in one sentences: 
You think these musicians have talent, but the fact they keep being replaced with a distracting 3D model of themselves proves it's all edited, lewl.

Series in more sentences: 
The son of a prostitute has little to look forward to, except escaping into the forest where an abandoned piano stands. When he meets a new student at school who wants become a pianist, the following events in his life lead him to the realisation he too wants to be one. 
While initially supportive of him, his pianist friend can't help but feel intimidated and jealous over his natural gift.

It wasn't exciting. Each episode felt like the first of the season, in the sense it introduced new characters and little screen time was given to establishing any relationships. The anime thought it was easier to claim two people were friends than to spend time showing it.

There were alot of director decisions made that didn't go anywhere. For example, characters sometimes comment that the dude looks like a girl, and that's it. Nothing else is said or done. Really weird and unnecessary.
It's also been argued he had a terrible life, but I saw nothing that made me believe that. The way the brothel owner reacts towards him and his hobby was needlessly hostile, but we're only shown two short instances where she gives him a frown. She's hardly in the anime. 
Is the boy having trouble with the cookie-cutter bullies at school, then? I don't know, looks like he can take them on just fine and he's hardly their target. How could he be, if these boys are also barely in the anime? Even the main character's friend and this other girl he meets along the way are treated as people we should care about, but they've only shared a few scenes together. The friend even told his class before his eventual departure that he hadn't attended school for that long, then 5 years pass with no contact; how are these two "friends"?

The series is a half-baked summary of a better show. The pieces are there, I can see how the characters and story could've been fun and touching, but none of it gets enough attention to earn this description. I didn't care about any of these people. I wasn't allowed to, they were demoted into background characters the following minute or a mouth to praise the main character with.

The friend was boring and could've been left out, the boy's suffering as a whore's son was not addressed until the end in a rushed clip show, and there were no hardships introduced to make us care in the first place. The boy is a musical Gary Stu; everything he did earned him a pass to the next round or the obsessive respect from his listeners.

Would not watch again.