Asuka. I don't like her, so this will be brief. She's a gun toting schoolgirl who claims that she is Runa Tokisaka and that Mio Date is her mother. She has a bag full of guns because the Kirihara people have been chasing her for a long time. She keeps lying to Kyosuke and tells him he's worthless and a lot of mean stuff like that. Give the gut a break! He just learned that he can change into a monster, since he hasn't been at it long, I doubt he'd really want to transform all that much since he doesn't understand it. Grrr! Shiro knows she's a Flicker and let's her know it. Kyosuke saves her from the Kirihara group anyway and she leaves.

She shows up at the end of the series and tries to kill Kyosuke with the other Flickers. See, i really don't like her, so that's it.