Bazett's barrier was supposed to prevent surprise attacks from the dolls, however Illya finds a little girl, Erica, sneaking into their school. For some reason Erica calls Illya "Onee-chan", and the two of them quickly hit it off. Meanwhile, a man claiming to be Erica's father appears. He seems kind at first glance, and while he came to pick up Erica, he's also...?!
I wonder what Tanaka-san's 
lost memories are of.
Was sie wohl für Erinnerungen verloren hat?
Me pregunto qué será lo que olvidó.
Me pregunto qué será lo que olvidó.
Je me demande quels souvenirs
elle a pu perdre.
Che razza di passato può aver avuto,
per dimenticarsene così?
Me pergunto o que são as memórias
 que a Tanaka-san perdeu.