Aren't those Nanoha-like magic circles? Though it's not Nanoha or anyone else from the show, and it's not like the inscriptions/etc used in Nanoha are unique.
comment #17537 Artists just like putting magic crap in their work. It doesn't mean they're necessarily related series.
If they want latin, they google for latin, and paste some in. Sometimes they'll go for greek or hebrew. The symbols for elements might be latin or chinese... Then you get an oddball like Utawarerumono that goes for cuneiform. (Magic languages are never explained)