Tsuna watching your movements carefully, watching your foot work and through watching your foot work determining various things such as your dominant hand and foot, and also guessing how you fight.
Seeing your left hand extend forwards, Tsuna quickly shifts his left leg behind his body and his right leg forwards, while leaning backwards and slightly to the right just as your fist enters the vicinity of his body bending his left leg as he does so and straightnening his right, also in the process his center of gravity shifts to his left leg allowing him a acute ballance, this fluent movement allows Tsuna to dodge with near perfect timing and of course leaving you little time to adjust.
Tsuna then quickly continues snapping his left leg forwards and thus straightening it, his left leg acting as a spring and vaulting his body forwards shifting his center of gravity to his left shoulder blade as he does so, simaltaneously Tsuna balls his right hand thrusting forwards with his vaulting motion in a attempt to deliver a left hook to your right temple.
Tsuna:Not to light on your feet, huh?