Yamai Kazamachi are the fifth Spirit(s) to appear. However, by the beginning story, the original Yamai has already split apart into two separate Spirits: Kaguya and Yuzuru. Being identical twins, Kaguya and Yuzuru look almost the same. They both have orange hair and blue eyes and appear to be of the same height. However, watching carefully, both still have their individual characteristics. She has "a characteristically delicate body that looked like it would break if hugged too tightly" as described by Shido. Her hair is braided up, and she has a lean figure. She has a determined expression for most of the time. Kaguya's Astral Dress is mainly the color purple and has chains on her right hand and foot. The lower half of her body has a half skirt around her waist which drops to the knees and opens around her thighs. Kaguya's height is stated to be 157cm, and her three sizes are B79/W56/H81. Despite being twins, their personalities are almost complete opposites to each other. Outgoing and outspoken, one can say that she is childish or immature. Kaguya often speaks rather unrealistically, as if she is acting. It is later revealed that it really is acting. Kaguya believes she needs to talk like this because she is a Spirit, and therefore "super awesome", and therefore must act appropriately. Having a chuunibyou-like personality, she often has the habit of adding random German words to her speech in an attempt to sound cooler. However, her acting can be easily broken if pressed upon, and because of this, she's constantly being teased by others around her. She's also weak about sensual matters and is easily embarrassed when mentioned.