
Giju saw his sister was dead inside the box (he keeps saying it was a bird) and can't handle it. He commits suicide and crosses into the afterlife. Youngdo is murdered by the assassin mentioned by the old man (They meet him in an early chapter and the author says Youngdo will be killed by him.) They are reunited in the afterlife and Youngdo tells the child Giju he will take care of him from now on.

I think it was because Giju's father tried to frame Giju for Yuju's murder, but Youngdo was also staying there. You see the boss of the mafia group say to get that assassin pretending to be a monk to kill him, but they were also going to kill Youngdo's "boss," I forget his name. He has a phone call with Sun where she says she got his baby and wife out of his house safely.
So um cam someone explain this to me cause i didn't understand the last chapters. Like i was lost at the ending?!