Responses
Seeing how his dad came home from an audition, it might also be inferiority complex. Yujin is super talented from what other characters have said. Maybe his dad saw that Yujin was more talented + Yujin's mom's death and you have the perfect cocktail for resentment. He clearly has something to do with Yujin's fear of singing in front of other people
That’s actually true. It could be a more gradual resentment instead of an instant response. And the fact he is a twin of his mum could probably be a factor too, he reminds him too much of her. Valid
I feel like the dads resentment would make more sense if the mum died trying to save yujin not falling from a fucking 2 foot stall