第七圣典

希耶尔所有的概念武装「第七圣典」的守护精灵。别名奈奈子 净化灵魂的独角马的精灵（自然灵），与奉献给它的少女灵魂融合成的人造守护精灵 人马半兽。基本上与人类没有区别，但手脚都是马蹄，也长出了尾巴。身着科幻风格的蓝色紧身衣 爱吃蔬菜，特别是胡萝卜。或许是源自独角马的缘故

简介来自 Bangumi

The spirit of Ciel's weapon, the Seventh Holy Scripture; referred to as "Seven" by Ciel, but nicknamed "Nanako" by Arihiko. She has hoofed feet and a horse tail. She also has the ability to transform into a winged horse, and is quite scared of her master, Ciel. [From Wikipedia.]

简介来自 VNDB