Seiju Den Twin Dolls / Twin Dolls: Legend of the Celestial Beasts

Two young beautiful sorceresses serve for the benefit of the foremother and the planet as a whole. Their very names make any demon tremble. To detect lurking creatures, they are forced to disguise themselves as ordinary students and attend lectures. However, as soon as danger appears in the form of monsters, as befits professional demon hunters, they transform into Twin Dolls!