Responses

Yes he did. He slept with the nurse woman to throw the other yakuza guys off the doc's trail. Then he had that fling with three women at once. But when Uzuki finally returns his feelings and they actually get together, he doesn't sleep with anyone else anymore.
If at some point in the manga thhe mangaka has riichi affirm that he wont be sleeping with anyone other than uzuki, that would be nice... (=・ω・=)