Haruto had always been fairly casual with addressing other people. It was rare that he added any honorifics, though he knew how much it could grate certain people's nerves. His friends, however, had never expressed any problems with him addressing him in such a way.

When Otoya requested the sword-gun, Haruto kept the bright smile on his face, turning the copied gun over in his hand and holding it out towards the other man. "Just be careful with it. If my mana would run out, it would disappear, but you're fine with holding it for now." He could also make it disappear at will, but he wouldn't do that just yet. Maybe he would just surprise Otoya instead.