WTF

so dan can be free

heartless people
like no its not for the better for him

Because she's the only reason left for Dan to stay with him and put up with all this abuse.
Nobody wants her dead.
Dan has two reasons to stay with Jaeshit: his grandma and his feelings. His feelings have been trampled on one too many times, and I'm sure he's understood that his love will stay onesided. If the grandma dies, there'll be no more reasons to stay with Jaeshit, since there won't be any hospital fees to pay anymore.

The reason why everyone thinks her time has come is because we've seen Jaeshit seem a good person when he was with the grandma. I don't think Dan just leaving or not answering the phone would make him go "what?" in shock, he'd probably think he'll come back because he needs the money.

Its the better for him

He still need to pay her grandmother's surgery thats why he needs money, just imagine how expensive it is, by selling his body and being a slave to jeakyung.

So if his grandmother is gonna die,
he no longer need to pay the massive bills in the hospital and
He no longer need to work in that hell hole where he suffered.
He can now rest and enjoy his adulthood.

i disagree

not really, jaekyung has paid all of dan's debts so frankly the debt has been transferred from the loan sharks to jaekyung. dan is still indebted. his grandmother's death won't change anything other than add another fraction of a second to his staying by jaekyung's side.

This is just my opinion(・・;)