Setsuna is a kendo expert of the Kyoto Shinmei-ryū of fighting and has some knowledge of onmyō-jutsu. She wields a nodachi passed down to her from Konoe Eishun named "Yūnagi". A native of Kyoto, she is a childhood friend of Konoe Konoka and serves as her guardian.

Setsuna is a winged hanyō: the daughter of a human and a Crow Demon. She has white wings, even though the wings of the bird tribe are black. Viewed as a bad omen because of the white color of her wings, Setsuna was forced into exile from her tribe. She was picked up by Konoe Eishun, who brought her to his home in Japan.

Setsuna attended Mahora Gakuen with Konoka and her friends. On a trip to the Magical World, the whole class was attacked and magically transported to the Ghural system, where they were separated.

Setsuna is currently serving as a Guardian, and Guild Officer of ZomgKittens Guild.