His mother of the ghost never pulled the plug on him seeming he slipped into a computer and didn't want to give up on him so when the mc gets hurts he meets the mom handling the difficult decision to keep him alive she does and after those three years have passed he woke up and went to the amusement park during the last scene saying when I meet you again I'll talk to you (the ghost) means he never really died and the reason it was titled that way not for the faint of heart means the mc really thought he died but in reality was in a comma and maybe couldn't even believe it was a possibility so that's what I think the ending means and why they started talking with each other
His mother of the ghost never pulled the plug on him seeming he slipped into a computer and didn't want to give up on him so when the mc gets hurts he meets the mom handling the difficult decision to keep him alive she does and after those three years have passed he woke up and went to the amusement park during the last scene saying when I meet you again I'll talk to you (the ghost) means he never really died and the reason it was titled that way not for the faint of heart means the mc really thought he died but in reality was in a comma and maybe couldn't even believe it was a possibility so that's what I think the ending means and why they started talking with each other ╮( ̄▽ ̄)╭

I don't understand the ending...