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'd appreciate it if you wouldn't soak 
my bloomers by wetting yourself!
Ich hoffe nur, du machst dir
nicht in meine Sporthosen.
Preferiría que no ensuciaras
mis bloomers.
Preferiría que no ensuciaras
mis bloomers.
Ne mouille pas ma culotte
en te faisant dessus.
Vedi di non farti la pipì addosso
anche nei miei bloomers!
Eu apreciaria se você não encharcasse
 as minhas roupas se mijando!