Selfish. He’s so damn selfish. He knows how uncomfortable his brother is with his feelings, and then tells him “why do you keep leading me on if you don’t like me?” But then when his brother tries to tell him to “let’s stop this pretending”, he tries to shut him up and then calls him “cruel”. Like boy, are you fucking kidding me? He’s petty, he’s immature, he’s indecisive, and he’s a manipulative, self centered brat. I hate his character.
Lol I don't know or maybe it depends on a generation but as a teenager like me actually there are some teenagers are like that. And the reason why just my opinion is because some of them were like too focus on their crush sometimes they act like a stalker and they don't have time to realize how they act was too childish. And you know everyone of us had a different personality. I'm just stating my opinion.

I literally hate Dongho (younger brother) so much, and he is SO MUCH of the story. Damn.