Could it be two different scenes made to look like one? Remember the water dripping on Naku's feet, the focus on the feet, and then Dutta's gaze? Only later do we find out that the gaze was Naku's, not Dutta's!
Perhaps that explains what we're seeing here in the precap. Or maybe someone is near Naku (angle keeps us from seeing) and Dutta tries to shoot that person to save Naku.
Isn't it going to be night-time soon anyways? I want some night scenes!