Ranma, Akame, Ryoga and you are best friend from a lot of time, and you all noticed how long are Ryoga's fangs, and so, since you and Ryoga are so close you change in front of each others with no problems, you opened his mouth with your thumbs, he gripped your wrists and let you do, even if he was a little confused, but when Akane and Ranma home away, he started to lick your hands

Ryoga: "... mh...~" he licked your fingers