So that's what she was up to, huh? Sounds like she was busy doin' something cool, as weird as it is to talk about myself like that. You must've known I...er, we...um...Hibiki knows how to play guitar, huh? It doesn't come up very often, so you must've been friends.

[She believes Chiaki, in other words. ...even if Hibiki1 never told her about guitars.]