He smirks. He could feel Ryuutaro starting to give into the more basic desires of sex, and if it was possible, it was turning him on even more. He wanted to see Ryuutaro give in to it completely. He leans forward to whisper into his ear in that hot breathy voice.

"Mm-mm... I want you to..."

He guides Ryuutaro's hand to his own member. He wouldn't be able to pleasure his boyfriend himself in this position. He places his hands on either side of Ryuutaro's hips to help guide him in the motions once he starts moving.

"Move your hips. Come back on me..."