In my Au,OG!Cale and TCF!Cale(Kim Rok Soo) are the same soul of a powerful God that split into 2,that is why they could switch soul with eachother

Half of the soul went to Earth 1 and other half stay.Both of them possessed(idk if i write this right) a body and live like that.Of course,Drew/Jour know about this but she didn't say anything to Deruth and ask for a demi-god help.The demi-god of course accepted and became Cale is best friend with another demi-god.The demi-god told Cale and Kim Rok Soo that they are the same soul but didn't say that is a God's soul and when Cale and Kim Rok Soo are 15 they(the demi-god) have to cameback to their place 'cause they have their work too but they always follow Cale and Rok Soo.

That is all:D✨