鍵ノ寺 千歳

Tsukasa saved her from falling off a cliff when they were children. Chitose wants to use her own life for the sake of Tsukasa to pay her back. She obviously doesn't want Tsukasa falling into Nasa's hands. She considers Tsukasa as her sister.

She has two maids: Aurora and Charlotte. Chitose has a personality that quickly bends from being strong to whining.