|Eye Color||Light brown|
|Relatives||Tooru Kokonoe (Older brother)|
|Light Novel||Volume 1 (Mentioned)|
|Anime||Episode 10 (Shown)|
|Japanese Voice||Manami Tanaka|
|English Voice||Lara Woodhull|
Otoha Kokonoe is Tooru's younger sister. She was supposedly killed, years ago, by Sakaki Narukami at the dojo all three of them went to as children, and because of this, Tooru seeks revenge.
Otoha has mid-length brown hair, with a braid on the left side of her head, and she has amber-light brownish eyes, both causing her to resemble her brother quite a bit. Her hair turns pink when she uses her Blaze.
According to Tooru, Otoha was a very cheerful little girl. She was very air-headed, but very kind girl with a very gentle heart. She sometimes wanted to play with Tora and Tooru.
What is known is that when she was very little, she, along with all the other kids at the dojo, (except Tooru and Torasaki, who was absent at the time) were killed by Sakaki. Due to this incident, Tooru enrolled to Kouryou Academy to get stronger.