Tsubaki Nakatsukasa

Tsubaki Nakatsukasa (中務 椿, Nakatsukasa Tsubaki) isBlack Star's Demon Weapons partner. A part of the Nakatsukasa Clan, a famous family of Japanese Demon Weapons, she can change into multiple ninja weapons, plus a katana. Subsequently, she is known as a Demon Shadow Weapon (魔暗器 Maanki) known as a Dark Arm in the English dub. Presently, she is a member of the elite student unit, Spartoi, along with Black Star.