Whoa, wait, what. Suddenly close and moving and why is he touching Whirl, and it's only because Tetsushi is Roze's dad (whatever that means) that Whirl doesn't outright punch him right now.

So the lesson isn't being stopped or anything, but Whirl is probably giving off an air of total awkwardness here as he mutters an "okay" before trying to focus on the damned fish.

Because that is what's important here. The fish.