[Armin is lost in thought for the moment, so it's actually Murgatroyd the Cherubi -- who's frolicking along Gertrude's back -- who notices Lux first, launching himself at her with a gleeful "Biiii!!".
That gets Armin's attention, and his grim expression melts away.] Lux! Hello!
Action
That gets Armin's attention, and his grim expression melts away.] Lux! Hello!