In the fight with the Factory Assault Team, Robin has her glasses on again.
Cowboy Bebop, another anime, also has an episode named 'Sympathy for the Devil'.
Nagira: See you later, Yurika! You, me and Robin ought to have a barbeque some...
Nagira: Because I am a Human I can't understand? Witches, Seeds, whatever you call them, they keep showing up at my door ... and of all of the ones that have come, none of them have looked any different then Human.
Episode Title: The Rolling Stones
The title of this episode is a reference to the 1968 song "Sympathy for the Devil" by The Rolling Stones.