Mizuha

Mizuha serves as the central heroine of the modern story arc. As the reincarnation of Hayase and the 18th successor of the Guardian Corps, she harbors a deeply unhealthy obsession with immortality. To the outside world, she appears to be an accomplished young woman excelling in both academics and physical pursuits; however, years of being controlled by her mother, combined with the parasitic presence of a Knocker within her, have severely warped her inner world. Her behavior oscillates between innocent girlhood and fanatical fixation, making her the pivotal figure driving the modern narrative.