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Nai (无)Birthday: unknown; however, judging by when the Niji breed, you can imagine he was born in spring.
Height: 157 cm (5'1")
Blood type: unknown
Likes: playing hide and seek with the sheep, basking in the sun
Dislikes: Studying and lessons with Tsukumo
Liked foods: Mochi Onigiri
Dislike foods: lamb (because of the Circus sheep...)
Hair color: white and purple
Eye color: red
Compared to before, his vocabulary has increased, but because he still uses it the wrong way, he is scolded by Gareki very often. He appears to be timid at first glance, but surprisingly his actions are often bold.
Nai's name means "nothing, not existing."
(Source: extra pages from chapter 18)
For a show with no romance, Karneval features a lot of physical affection. Filled with hugs and cuddles, it's still never romantic. The only thing nobody ever does is kiss each other. Not even once. But oddly enough, the grumpiest character in the show is the one who gets *almost* kissed the most.