The surprise wasnt all that shocking. After all, who wouldn't be surprised that the guy you were talking to claimed to be a girl that just didn't quite look the same. Sure there were some similarities in the way they stood or the shape of their eyes, but Kea and Keara were different. Hell, he even used a different hand to write depending on which appearance he took on that day.
"I am, because I am." He said with a simple shrug. He did chuckle though at the mention of a lack of breasts. While he changed to reflect how he felt that day, that didn't mean that he was against changing back and forth. With a shrug, he ran his hands through his hair and let his body shift. Hair grew out and changed to the electric blue that was well known, height changed and assets moved, penises were gone and breasts appear. The clothes she wore were a little looser on this frame, but not enough to be awkward. "Surprise, boobs?"