[His eye does flicker and glitch...but it's brief. It's so brief there are few peope who could notice it, but Kojirou is a perceptive guy. Maybe he will.

He doesn't speak up until after it's seemingly settled, at least.]

My engine is capable of achieving speeds that can propel me beyond the speed of light. Originally it was designed to achieve the speed of sound. It was merely an appropriate designation. Perhaps were I capable of what I am capable of now, I would have been named Light.

[The most appropriate designation. He is Sonic. There's only room for one Sonic. There's no need for a second Sonic.

He is Sonic.]