Responses

Yes he did.
He's told him to not bother him and when Skylar left to go home while Chan-il was talking to his friends it shows Chan-il clearly went to go catch up to him to talk to him.
"Just going in the same direction" is such bullshit after it shows him matching Skylar's pace to be at arm's length by speeding up or slowing down with him. Thats an invasion of personal space especially after the person that told him to stop bothering him and avoided him.
I feel like Chan-il probably has like a lot of underlying problems. Like he feels like he needs everyone to like him and constantly forces himself to get along with other idrk.