People like him exist in real life, especially The manipulative ones, or those suffering mental disorders
I, for one, feel fuzzy to see him healing and finding the silly, upbeat kid he used to be
also, he's still obsessed w jeongmin, that much hasn't changed. he's just learning how to express that obsession in a benign, affectionate manner
He's always been cheerful. Read his interactions with Jeongmin in the early chapters again. Just because he's obsessed with Jeongmin doesn't mean his whole personality will change. He's always joked around, Jeongmin is the one who was gloomy.
Still cant grasp the ml personality. I mean, he was obsessive and twisted. But suddenly he become a cheerful guy who likes to jumping around in short time. Wondering how he can do that in just a blink. And i think author want to drag this story. I dont even know where this will be going. Im afraid i'll abandon this one just because i got bored. I cant, i love how obses siyun was.