When Abang decided to spill his thoughts and feeling with the Monk - the scene was literally the "longest line" of his throughout the entire plot. And what better way to convey the emotion by conversing thru sign language and pure body language.
Each main characters were aptly introduced, grown and put in place accordingly to enhance the story. Nothing too less, none too much.
Nice plot twist when we thought the story ends after the bus left. Also the untold murder scene from Abg's story.
Casual approach to tell the audience that he's facing final days before execution - simply by letting us viewing that piece of paper that wrote "3 hari lagi, ada nak jumpa sesiapa tak"
For those who knows, the Azan playing on air in the Penjara is to signify an execution took place (regardless of religion). That's how we know Adik was nearby the Penjara when execution took place.
The chase scene (running from mobster) - the sound effect was made as POV from a deaf person.
So many subtle but well-place nuances in the film - I can't express enough
As mentioned by one of the comments here - World Class Story telling.
10/10