Noooo Chae ah is supposed to be the only one for him
Why would he wanna keep living for eternity after he loses his meaning for living?
Why would she condemn him with death knowing he wouldn't be able to leave without her
That's why the both die at the same time
No, it was only him watching her wither away.
And then she died, and he went on to "living" forever without her, but at least he knew what love is and hopefully he would learn it again.
END