アイ

Yuuto's pet cat. Secretly, she was also from the same race as Sofia. Her personality is pretty much straight-out cat down to the bones, lazy, whimsical, and disinterested in anything troublesome.

Her real name is Aino Kugel Eluruin. She is actually one of Sofia's relatives, a princess thought lost far in the past. She likes her life as Yuuto's cat a great deal more than she ever liked living as a princess. Ai considers Yuto more than a master, he is an irreplaceable person for her, her love for him is pure and sincere.