Yes it is
no it’s not where season one ended off i think it’s when he went to boarding school or wtv maybe after that?
No it is currently the present. Hence, there is a photo that mokyeon and nanjo took back at ch23 at the photobooth you will see it on the ground when mokyeon is throwing up in the bathroom near his shoes.
Also, if you notice the background of the webtoon turned white at the end and it's not black anymore which means it not the past.
His hair got really long so i guess it been months
Pls don't tell me the last panel is currently the present