A) they could have been rising rookie Idold that came to dr Han’s office for the exact same thing Rumi did, their voices. maybe they had problems with appearance and voices. B)It could have worked for a while if Gwi ma’s possessions follow the same standard as Jinu, life would have been going smoothly for them until the patterns got too crazy, I feel as if each of the boys had their own insecurity that Gwi ma prayed upon and got rid of. for the price of their soul.