[ look don't expect him to have high standards here!! he is just. very excited about seeing his very first nipple piercings up close and personal, which is why the first thing he does, spurred by the desperation in shiro's voice and the slowly deepening stupid-lust taking over his brain, is to immediately duck his head and put his mouth all over one, licking and nibbling curiously. the contrast of the metal with the taste of shiro's skin is fascinating, and he wants-- he wants more than just this, he wants to lick shiro everywhere, he wants to press his face in against the places that smell delicious and are begging to be tasted. his lips close over the peak of the nipple and he sucks delightedly, something like a purr rising in his throat and forgetting to be nervous or self-conscious about what he's doing. ]