Airi, a spectral assassin bound to the Swamp Witch’s will, sustains her form by feeding on life energy—particularly from young women—through touch or kisses, leaving victims drained or lifeless if exploited. Her striking appearance features crimson twintails, a French maid ensemble, and a scythe, later evolving to include chains, a collar, and a star-bladed weapon reflecting her deepening servitude. Unwaveringly loyal to the Swamp Witch, she endures extreme trials like days of tickle torture to prove devotion. This allegiance fractures after a Queen’s Blade defeat forces her into enslavement under Elina Vance, restricting her feeding to Elina alone. Reduced to begging for sustenance, Airi’s form and attire deteriorate without steady energy, emphasizing her fragile existence. Her combat prowess combines summoned spirits for immobilization, rapid healing, and fleeting intangibility to dodge strikes. She thrives in close combat to siphon energy mid-battle, yet her ticklish sensitivity and reliance on focus for physical cohesion expose vulnerabilities. When weakened or distracted, her projected outfit dissolves, leaving her defenseless. Interactions reveal a pragmatic but torn nature: she hungers for potent energies like Leina Vance’s or Nowa’s, yet alternate tales depict coerced obedience, such as serving Elina. These arcs trace her struggle to balance loyalty to the Swamp Witch with survival-driven compromises, including hollow pledges to Elina to stave off dissolution. An obedience spell binds her to the Swamp Witch’s commands, erasing autonomy as she furthers the witch’s quest for dominion. Despite her spectral state, she clings to human-esque traits—reveling in dance and savoring the "seasoning" of her victims’ fear during feedings.