Responses
I think it was ml, since sandeul says he's going BACK to Seoul.
I'm pretty sure the beginning of chapter 1 is just showing something that happens later in the story.
Oh i thought when mc said "dont confess" it was worded to ml, turns out it was the senior ╮(￣▽￣)╭ maybe the senior will appear in future chapters （￣へ￣）