Review of Sing "Yesterday" for Me

Honestly, I've never really been emotionally invested when it came to seinen or coming of age stories. Shigatsu wa Kimi no Uso, March comes in like a lion, A silent voice, etc...they touched upon depressing matters, but they never felt very realistic to me. Rather, it felt more of a melodramatic story no matter how you spun it. The fact that Yesterday wo Utatte tries to capture this sense of "realisticness" that I don't think other coming of age stories quite manage to cinch. I sympathized with Uozumi. Not sure what exactly you want to do, don't want to take that extra step forward becauseit might end up not working. Frustrated because things didn't work out the way you imagined it to be. Honestly, I felt like I was in his shoes, and I felt like crap. I felt like crap. Damn, it was pretty depressing, and I think the show makes you understand Uozumi's feelings.
Then, just like that, right around the point where he just got rejected and was depressed, a strange girl. Haru comes over into his life. Uozumi, however, still hasn't moved on, and the story becomes a touching romance and coming of age story as to how he becomes a better person and finds the courage to move on with his life after dealing with rejection.
At least, that's what I think should have happened. So why exactly does this show turn from a melancholic coming of age story to a straight up drama and romance show? Uozumi's character is clearly childish and it really doesn't feel like he ever becomes mature. In fact, Haru is the character that shows the most composure in the entire show. Uozumi never really changes in that aspect, and I was hoping that the show would be focused on his coming to age and with Haru. Instead, I get this convoluted love octagon (the anime skips a lot of this). Yes, you heard me right. there's like 8 different people that are introduced into the story in order for there to be many, many love interests. I just don't understand why this show devolved into a romance drama where Haru likes Uozumi, Uozomi likes Shinako, Rou likes Shinako, etc.
Not only do I not care about anyone that's not Uozomi, Shinako, and Haru, but these strained relationships ruin the entire show. Uozomi is standoffish and cold towards Haru for a majority of the series. Shinako is ambiguous with Uozomi from the beginning to the end. Uozomi doesn't move on with his life and romance for the entire series until the very end. I had to read the manga in order to make some more sense of the series. Trust me, it doesn't get much better. The only thing that you miss from the manga that's important is the fact that Haru and Uozomi have a lot more bonding moments/making up moments that aren't touched upon in the anime. This makes it so that Uozomi is less of a psychopath towards Haru, I guess. The entire series comes crashing down when the show isn't about Uozomi's self development, but rather, it's more focused on romantic interests and drama between these romantic interests the entire story. The manga is 112 chapters long. Clearly, the anime skipped quite a few things. But the reality is that 90% of the stuff that the manga skips is the filler content that's about useless romantic interests that litter the story. The author thinks that it's necessary for there to be people in love with other people out of the blue in order for there to be any semblance of character development. Plus, there's even romantic development in random side characters that I really didn't give a damn about.
The show gets so sidetracked with this love drama, that it lost the essence of reality that it was trying to ground itself in. I didn't really care about who Uozomi gets paired with in the beginning, honestly. But the fact is rather than feeling sympathetic for Uozomi in the end, I find him to be pretty psychopathic. I can't even begin to figure out his thought process, especially towards the conclusion of the series.