Knet's investigation is another level. They can find that Junwan used blanket with the flag of England. In ep 9 when IS and JW talked about study abroad plan, there were red double-decker bus and red phone box - England's symbols, were placed in front of them.
#Hospitalplaylist

All of these imply to IS and JW future. Maybe IS will go to study in UK? Idk, but if it's true, Knet and Shin Pd are all geniuses. I rewatch HP many times, but I can't find anything.
#Hospitalplaylist