Tenka is the Inverse of Tohka, Tenka's Demon King is a sword, <Nahemah>.

Born from Mio's body, she is the first Pure Spirit to ever exist and, by a far point, the strongest of all Inverse Spirits. At times, she is particularly blood-thirsty in combat, relishing a good fight against a worthy opponent. Tenka also has a soft spot for Tohka, her other self, whom she views as a little sister of sorts. Despite her short temper, she is willing to be patient for the sake of Tohka's happiness.