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...?!
Anything is fine! If we have some kind of clue...
Egal, was es ist! Vielleicht können wir
irgendwelche Schlüsse ziehen …
Lo que sea está bien. Si hay una pista…
Lo que sea está bien. Si hay una pista…
Peu importe quoi.
Qualsiasi cosa!
Se riuscissimo a trovare anche solo un indizio...
Pode ser qualquer coisa! 
Se tivermos alguma ideia...