
Everyone wants them to switch back but it will be terrible.
Switching back means they will get all the memory of each other. It will be awkward and sad.
You love someone and shared kisses and hugs but third party getting those memory as well as the body. Don't know about everyone but I will be heartbroken. I wouldn’t want to share those precious memory with third party. Also they are from two totally different major. Adjusting again will just give them trauma.
They were only five years old when their soul swap. Unknown place, unknown body and unknown memories is enough to give some trauma. And we already know what happened to Wonjae who couldn’t adjust. I don't want him to suffer again ╥﹏╥

Whoever wondering who the girl is? She is jiwoon's sister. He has two younger twin sibilings that he didn't even know exist until he met his parents. Same with the twin. That disgusting parents never mention about jiwoon to those twin.
P.S: when the parents happily building a family, Jiwoon was suffering in that shitty household under tremendous pressure. This just shows how disgusting and ignorant his parents are. I really don't want him to associate with them ever again.
I think last two chapters from the main story showed the reunion with his parents. You guys can read it.
EVERYONE IS ON FIREEEEEE....