Seraphim

A skilled vampire ninja, this powerful warrior blends supernatural strength with the lethal Tsubamegaeshi sword technique. She possesses the unique ability to manifest wings and a katana from mere leaves, though she must consume blood to survive. While she initially arrived at Ayumu’s home to serve Eucliwood, she now acts as Ayumu's reluctant servant. Despite frequently insulting him with harsh epithets, she maintains a deep, underlying respect for his impressive combat prowess.