Idk if my understanding is right but is like an alternative person..ma chunso and yang jagak is a two soul but with same conscience..for them to become 1 they need to die.. that's where the looping start..it start like in the first chapter we see..how it is possible? That's the power of the hourglass..it is possible. Now the first arc we saw as yang jagak..is the past..but how he can see the thing left my ma chunso? Bcs the past and present are interconnected. The goal now is to end this looping..
How could he lived 2 lives in ge same time period? I kindy get it now but what happen to Yang Jagak who was still alive in that period? If his soul is already living in Ma Chunso's body? ╥﹏╥