Final surgery scene

 avgstu :

Who is the person getting a brain transplant at the very end of ep 20? 

Is it Han Seo Joon? If so, does that mean there’s a possibility of season 2?

There are a lot of things that would lead in a second season but I don’t think we have a second season

About the surgery : https://mydramalist.com/58953-mouse#comment-6544087