Responses
I've reread the first chapter only (i was curious) but it was there
6 to 7 is i think what ryeongs' guess on jae's age
and one disciple he considers his son but died (i think it was caused by the hunters hunting ryeong)
...it was mentioned in the first few chapters that ryeong has adopted human kids (7 or 8 of them?) which he raised either as son or disciple
i think it was after(?) finding jae lying unconscious