Ai Sindo of Kyokai No Kanata

Ai Shindou is one of the secondary characters of the Kyoukai no Kanata series. She is a cat Youmu who lives with Ayaka at her photo studio. She helps Ayaka with housework and models for photos, among other things.

Ai takes the appearance of a young girl with big, blue eyes, long wavy brown hair with short fringes. While in her Youmu form, she becomes a Scottish Fold with white tips at the end of her tail.

As a human, she has a round, innocent face accompanied by a soft, melodious voice. As described by Hiroomi, her gestures are of a typical cute, little sister. Her hair is generally loose. She is often seen wearing only a dark blue sailor uniform but occasionally changes her attire. Upon seeing Ai's nude picture, Mirai commented that the former has surprisingly large breasts, comparing them to watermelons.

Ai has a bubbly and cheerful personality, and seems to be a person who would be excited by little things. Sometimes, she becomes so overwhelmed by emotion that she turns back into her Youmu form.