It's probably a little late to suggest corrections, but I think "Mito Arushurain" should actually be "mit Arschlein." It's German for "with a cute arse," or something along those lines.
Also, if we read "Shinon Berukuru" as "Chignon Belle Cul," then her surname(s), if we ignore the mismatch of grammatical genders (it should be "beau"), would also mean "nice arse."
One arse reference could have been a coincidence, but two? I think not! Though, oddly enough, I can't see any puns in the other characters' names. Maybe I just don't know enough languages...