Since the story was sorta short I think it tired to explain it the best it could lol but I’ll try to give insight on your questions:
1) I think he was so obsessed with her because SHE broke up with him. He was very narcissistic and when she could care less about him he was distraught.
2)Lime was sorta unnecessary and I totally understand your POV. Maybe the author added him so that they would have another hurdle to overcome but I’m not sure lol.
3)Minji basically had love at first sight and byul (I think that’s her name oops) find out and sorta lost a friend. It was probably meant to bring Sena and byul closer by creating that tension.
because he has sociopathic behaviors? I don’t think Sena let him more. Even if another girl say to him “Hi”, i am sure he is gonna think she like him (〜￣△￣)〜 he is an egoist
i liked it but
1) Why was Senas ex so obsessed with her, they made it seem more deep than it actually is
2) Lime was really unnecessary to the story they just added him
so sena can have someone to talk to
they never really explained why he was important to the plot
3)the whole thing with minji and the painting??