Yoo na tried to save the man with the burned arm, but he chose to get the arm than her. When Yoo Na died he took revenge by killing Zi Oh's best friend.
I mean dude, she tried to save you, she informed you about their evilness over and over again and like a fool you followed the wrong path.
You didn't deserve Yoo Na and her sacrifice...
As for the death of Go Reum's family we finally learned the truth... That means Goo Reum is genetically modified to stay healthy / her genes are regenerative process is quick most likely.
The cost is huge though, since the Cult Lady will take Goo Reum and the baby and since "Grandpa" will find out that the baby girl is Zi Oh's, will try to do experiments on her.
I mean dude, she tried to save you, she informed you about their evilness over and over again and like a fool you followed the wrong path.
You didn't deserve Yoo Na and her sacrifice...
As for the death of Go Reum's family we finally learned the truth... That means Goo Reum is genetically modified to stay healthy / her genes are regenerative process is quick most likely.
The cost is huge though, since the Cult Lady will take Goo Reum and the baby and since "Grandpa" will find out that the baby girl is Zi Oh's, will try to do experiments on her.