Just shut up, Ikki, you'll need your voice for when you're screaming my name.
[and Kazu is reacting with experience because he remembers exactly what Dino's face looked like when he arched his back like this, made this same quiet noise and twisted his hips just so--all instinctive reactions at the time, and Kazu's hardly faking it now because holy shit Ikki tearing off his glove like that is somehow a million times more arousing than what his hands are doing and it's making Kazu a lot less confident and a lot more horny]