A member of an American family of EnJutsushis specially skilled in creating and controlling spirit beasts to harness flames. She manipulates myriads of spirits into a single virtual persona to grasp tremendous power. While seemingly capable of creating different spirit beasts her favorite is Metatron an angellike statue equipped with a sword. Kazuma has observed and mentioned that her fighting style is similar to Ayano039s referring to their simplistic and direct attacks which lack any strategy or tactics. A rival against Ayano in both EnJutsushi and Kazuma039s quotlovequot. wikipedia When her first battle with Ayano doesn039t go as expected Katherine hires Kazuma to train her in developing more advanced fighting moves and quickly becomes attracted to him. She then realizes that if she can pay him more then the Kannagi family does he039ll be willing to go back with her to America so she often temptes Kazuma with lucrative offers.