Kisa is the Tiger of the zodiac. She is very shy and withdrawn, largely because her classmates harass and ostracize her due to her naturally orange hair, a side effect of her curse of the tiger.

Tohru helps her to come out of her shell. In effect, Kisa develops quite an attachment to Tohru, calling her "oneechan".

She dislikes dry foods and loves an anime series called "Mogeta". Usually seen around Hiro or Momiji. Hiro has a crush on her.

Kisa has a very good relationship with her mother, who is very supportive of her daughter's situation. Her mother is extremely protective of her and worries about her often.

Kisa is a really nice girl. Despite the fact that she's always getting picked on at her school, she never would never hurt anyone. She becomes depressed and eventually stopped talking to anyone. She was bitter at Tohru. When Tohru understood her situation, Kisa surrendered to Tohru and follows Tohru around like a little duckling. She started to talk again because of Tohru.

Yuki feels close to Kisa, because, like her, Yuki went through a period in which he wouldn't speak.