Nope. The dream was about Sangwoo returning.
But I actually still think that that part was a dream too. Because 1) blood on the floor and the knife disappeared and 2) uncle's reaction was strange 3) frames also were kinda strange when the scene had suddenly changed (before policist's returning I think?) and then 4) Bum's pants. They suddenly were put on, when he woke up. I might be wrong, but this is still strange...
I actually have to agree with that. It's a little strange especially after cutting his uncle's hand there should've been blood on the knife but there wasn't.
Exactly!! It couldn't be just Koogi's mistake, could it?..
Sooo... Uncle was a dream?