I think quote form Tanushka Saini article sum up his character best
"Taehyun is not a very likeable character. But he is very realistic. He is not to be taken at face value. Sometimes he acts like a prick, sometimes he does not; always wearing a smirk to cover up the pain behind his eyes, hiding the pain he does not want to deal with. His past is filled with trauma, the trauma he supressed to the point that now he does not feel any emotion; or maybe he does and does not want to acknowledge them. It was exhausting to watch him. He has friends, but he is so good at hiding everything that nobody realises the things that he is dealing with. But, most of the time, he is not aware of what he is feeling. He had no one he could talk to about those feelings, nobody to understand him, nobody to tell him that it is alright and that whatever happened was not his fault. You know, a shoulder to cry on. So instead of dealing with his emotions, he refuses their mere existence. But his character just made its way into my heart. A soft corner which I did not know I could offer. So let me phrase it better; for me Taehyun was the best character. "
If you are interested I recommend reading whole article it's very comprehensive and sum up neatly feelings reader can expirience through this manhwa (^^)b
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