Haruka hails from a village ravaged by demons, an attack that claimed her family and friends. Forged by this tragedy into a demon hunter, she is captured during a mission and imprisoned in a cave where demons torment captive women. When confronted by brutal violence, her latent demon blood awakens: her hair ignites crimson, eyes blaze red, and a spiraled horn erupts from her forehead. This berserker state channels raw power against foes but drains her consciousness once the fury fades, leaving her weakened. Though the transformation stems from hereditary ties to demons, triggered by anguish, she cannot command it. Rescued by Rekka, Akane, and Ayano, Haruka integrates into the Crimson Lotus Clan. Reserved and self-doubting at first, she slowly bonds with her companions, often tempering clashes between fiery Akane and pragmatic Ayano. Rekka’s steadfast encouragement nurtures her confidence, anchoring her within the clan’s kinship. Yet shame over her demonic lineage lingers, its origins shrouded in mystery. Her bond with Rekka deepens into tentative romance, hesitations easing as they acknowledge his past with Tsukikage. Their relationship culminates in intimacy, a fragile refuge where she confronts self-acceptance. In battle, she harnesses razor-sharp claws to dispatch enemies during transformations. However, the erratic surges of her power—tethered to volatile emotions—expose tactical risks. She embodies both a survivor of demonic cruelty and an unwilling heir to their destructive force, perpetually torn between clinging to humanity and subduing the primal darkness within.