Yukine snaps to attention, and once he's been given his orders he replies with a firm 'right!' before running off.

It doesn't take very long to get the (heavy) practice sword and return to the yard. Honestly, Yukine thinks that doing the kata forms is too finicky, with 'put your feet that way' and 'keep your elbows this way', but he will practice the basics diligently. Foundations are important.

...But despite his good intentions he's still a relatively impatient teenager.

So he moves through what he remembers, occasionally hesitating when he's not sure what the next form is, and then moving too quickly, impatient to get past that part.