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...?!
Yes, I was placing barrier runes 
across the premises.
Ich habe Barriere-Runen
auf dem Areal verteilt.
Sí. Puse runas barrera
en los alrededores.
Sí. Puse runas barrera
en los alrededores.
J’ai placardé des runes d’alarme
dans l’enceinte.
Sì.
Sim, eu estava colocando runas 
de proteção em volta da escola.