Hagihara, Shiogi

Debut: Zaregoto vol. 3

Hair color: black

She is a self-proclaimed tactician and lieutenant among the students at Sumiyuri Academy. Cold and calculating, and extremely perceptive, she proves herself to be a formidable enemy.

Spoilers for volume 3:

[Spoiler] She appraises the world in a very logical way, so Ii's "aura of chaos" really throws off her ability to strategize and eventually leads to her defeat. [/Spoiler]

[Spoiler] Shiogi is violently killed by Ichihime using her "string techniques." [/Spoiler]

In subsequent works:

[Spoiler] Shiogi is mentioned time and time again as a master of strategic combat. It is said she clashed with the Killing Names on more than one occasion. [/Spoiler]