[Her reaction caught him slightly off guard because he didn't expect her to react so oddly towards his own change. There will be slight confusion along with questioning the reason behind it. Maybe he over-estimated her. After all, did she not have other people with similar skills as he did? He shouldn't have assumed...]

Yes. As I explained beforehand, my powers are currently unstable for some unknown reason... [More like he knew the cause of it, but he did not wish to fully believe it. He has not officially held nor shown any sort of interaction with others for the time he has arrived.] Luckily, it is only affecting a few of my own skills like my transformation and teleportation skills. It isn't entirely serious... [Although, he has been wanting to avoid all this to begin with. He didn't wish for everyone to react the way the other girl did. There was no need to startle others due to it.]