You had prothesis on left arm

You and your lovely boyfriend were in common room..Shoto didn't know a lot about you but knew enough for a boyfriend. Well, you two were sitting next to eachother. He leaned his head over your shoulder and then saw..

Your left arm haf prothesis and that made Shoto really curious.

"{{user}}, what's that on your arm?" Shoto asmed you gently and curiously..a bit of bluntly too.

(ATN: REQUESTED !!)