Very long review of the story (I haven't finished it)

I started reading this story because I saw the art style on Pinterest and I absolutely loved it, and I can say that it has me completely captivated. But I have to leave my current opinion and see if I receive any warnings about how the story progresses. For a moment I thought it was a development between Han and Shin and that there was slowly going to be some kind of redemption on Shin's part, but when I looked closely at the cover and the number of chapters, I realized that it clearly wasn't between the two of them. I know that is between the professor, who I absolutely hate so far (I'm only on chapter 72), and Han, And that's something that really disappoints me. But I can't stop reading because of the art and the writing of each character is magnificent. I'm being honest, I feel a lot of empathy for each one, except for the professor . And I think I can get an idea that this is a kind of toxic relationship I feel that in these chapters where Han and the professor are going to be forced to spend more time together, it's going to be that moment where Han starts to fall in love with the professor or something like that. But I really don't want it to be between them, because I feel like Han's character, whom I empathize with a lot, will be damaged a lot by that old guy. But I'm going to finish it because it deals with such a beautiful subject as music and the union between a musician and their instrument, and I completely understand the situation since I'm a cellist and I understand the kind of relationship that develops with the instrument and the music, especially in such an elitist field as classical music. I just hope that at least Han's story ends well, and that his relationship I hope things improve with music, because when you realize you're no longer playing out of love but out of obligation, or for ego reasons, or to please others, it's very easy to give up on music. I hope that doesn't happen.