Nipples are little bundles of nerves, and Yamamoto had peeked at enough gay AVs to know it was a thing. He liked to play with his when he masturbated.

He continued his three-prong attack on Gokudera's body, switching to the other nipple, swirling his tongue around the nub as he mirrored the motion with his finger along the rim of Gokudera's hole. He looked up, brown eyes alight with amusement at the insult.

"Like that, huh?" he asked before licking his way back to the first nipple.