Please answer these questions if you watch the movie. It's very important to me.
Yes soomi didn't go there. She was planning to go there but stopped to have a verbal fight with the stepmother and in the heat of moment she just ran away in anger
Dude is dirt poor and didnt bother taking all the (embezzled) money with him?
Well dude was also technically dying from the head injury and even if he had taken it he would have fainted with the money thus making him a suspect as well
Totally. While I won't say he wasn't at fault but he wasn't really responsible for anyone's death. They were going to die anyways. Like it was already stupid to begin with. You can't take out a whole organisation with just guns
1 
Do all the side couple end up together? Or is their any tragedy?
Calling your daughter slut and toilet is just unimaginable.