[Nagare is aware of how valuable information can be, especially in times of conflict. He was formerly in a position that allowed him secret access to a wide variety of information, even personal information on other people. So even a harmless question such as this one has him wondering about the reasoning behind it. Though unlike hiding behind a username on an anonymous network, there is little point in avoiding the question since they are interacting face to face.]

My name is Nagare Hisui. [Then, with a small gesture of his hand towards his avian friend.] And this is Kotosaka. There are occasions he can't control his emotions, but he is a good friend.

[And despite his limited experience, he knows that introductions often lead to attempts at building relationships. It could be potentially useful, if their goals match.]

Incidentally, I am a witch.