
I don’t think so tbh, taku always felt like he had to compete with joowon so obviously finding out that his friend told haesoo about the accident would make him react in some way bc it’s like he ‘lost’ and even without that happening joowon was always the obvious choice haesoo never stopped thinking about him

This is part of Taku's character development though. It's because he sincerely and deeply fell in love with Haesoo that he's now able to express all his emotions openly. The author is only showing his emotional growth. Emotions can sometimes be ugly, especially when someone's in love and heartbroken. It's fine, it only makes him human, not an asshole.

But as for me Taku is professional even at this young age even if he is hurt he went to his exhibition , and told to people , it is decided tht Taku gonna feeel pain or hurt but yah it's hard to see when it actually happens I m proud of my boy he is professional unlike someone who is moody and work in their own interest

uhhh no? the author did NOT make that up out of thin air, and Taku's behavior is very consistent with his character. I mean, did you miss the parts of the story where Taku showed how manipulative he can be at times? How he's been more and more emotional and insecure about his relationship with Haesoo?
He even said to Haesoo that he'll love him in his own selfish ways. His reaction in that moment makes 100% sense, because his emotions culminated in that point where he felt like he was about to lose his FIRST love (which is a big deal!). He's always care cared more about Haesoo leaving him, than Haesoo's actual happiness-- and he KNOWS it when he says his love is selfish. So yeah, his reaction makes perfect sense.
The author decided to showcase Taku in a negative light just to justify her choice and make Joowon more of the “obvious” choice. Taku has never been shown to have anger issues. In fact his biggest problem, last I checked, was the fact that he had NO emotions. Now he’s running around screaming at people?! I’ve always said Haesoo was just as toxic as Joowon and I saw this coming from a mile away. I’m not mad they’re together, but I’m pissed the author just threw away all of his character development in one chapter for no apparent reason.