Guren's sergeant and one of squad leaders of the Moon Demon Company. She was sent によって him in the beginning of the story to watch Yūichirō when he was tasked with making friends. She is sarcastic and enjoys teasing others, especially Yūichirō. She is the real sister of Mahiru Hīragi who developed the Cursed Gear and despite being part of the Hīragi family, she is uninterested in their power struggle, and is considered a disgrace. Additionally, she is loyal to Guren. She later develops feelings for Yū. Her Demon Weapon is Shikama Dōji (四鎌童子?, lit. Four-Scythe Child), a manifestation-type demon weapon which takes the form of a large scythe, but can be condensed into a pen-like object.
