Did you see that ending scene where he is seen selling magazines and one of the girl approaches him and buys that magazine. He again Hallucinates that she is his gf but this time he snaps out of it as he has finally accepted her death.
The coach meant that his gf is watching over him (from heaven) and cheering for him. That hairband was from the coach but the coach meant that if she would have been alive she would have given the hairband to him.
the one who asked about street light?he had PC cafe (idk how it was said in English)
Yess... I think he's the culprit. Had he not appeared again in today's ep i wouldn't be doubting him... But his appearance in today's ep would feel weird and unnecessary unless the writer is trying to foreshadow the identity of the stalker.
Ahh! This is why i love solving the mysteries in kdramas🤣