Seraphim  

Sera, セラフィム

Sera, short for seraphim, is an exceptionally gifted vampire ninja who skillfully combines her tsubamegaeshi sword technique and ninja agility with her supernatural powers to vanquish foes. she can transform into a pair of bat wings and wield a katana made from several leaves as weapons. being a vampire, she must consume blood periodically to sustain herself, and has the ability to anesthetize individuals with a kiss, which she uses on other females due to her cult's prohibition against males. initially, sera comes to ayumu's residence to serve eucliwood, but when her advances are rejected, she becomes his servant in hopes of changing her mind. despite her cold demeanor towards ayumu, she harbors a deep respect for his combat prowess.