Yori is a Guardian Character of the Shugo Chara! series. Rather that he is a official Guardian Character, he was debatable in the official Shugo Chara! anime. He is also Tsukiyomi Ikuto's second Guardian Character, after Yoru.
Yori's personality is extremely complex and complicated to find in the anime. Peach-Pit, the author, seems that they place him in a rejected design of Amu as Amulet Doggie (debatable).
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