So the reason why Jaeha helped him is because the current Yonho told him the story about the old Jaeha helping him.
I think so too
I would like to think of that as well, but if we would follow that kind of sequence; then it would be inevitable for Jae-ha to die. :( T_T
( ̄∇ ̄") (/TДT)/ ╥﹏╥
Your avatar tho lol
So the reason why Jaeha helped him is because the current Yonho told him the story about the old Jaeha helping him.