Responses

So rn pado is his Sunbae or is he new student? And why haeil already working near his college, alr form a band, etc, it's like he's already meeting pado since along time in college but never communicate, not new, so what do i miss? Why he just recently meeting Pado in the place he work saying "this is first time seeing pado again", is this time travel? regression? or does he have amnesia after drowning?
I'm confused with the time setting, someone who understands pls help me. Is there any time skip for them like does it the first time they meet each other again or is haeil new student?