I am Misumi is a member of the White Knights, though she seems to be ranked lower than Kana Shiraishi and Rin Shiragiku. Misumi has spiky black hair and wears a pair of glasses. She is is noticeably smaller sized than the rest of the girls, Nanami being the closest to her in stature. She wears the white dress worn by all White Knights, along with distinctive thigh-high black socks and brown shoes, although she was seen in her old black uniform in a flashback. Under her skirt, Misumi wears white panties with a little yellow ribbon centered below the waistband which can be seen in some scenes. Misumi is noticably shorter than her peers at around 4' 11". Later, as Karen Minamino explores the school and finds the hidden entrance to the basement, Misumi attacks her, descending on her with a kick. Misumi then punches Karen through a door and knocks her glasses askew, crushing them under her foot. She then attempts to heel kick Karen, but is stopped by Risako Nagisa, who grabs her leg and throws her violently. However, the White Knight manages to easily recover herself mid air and lands unharmed on a sofa, to which both Risako and Karen react with evident shock. Misumi then laughs diabolically and rises, before cracking her nuckles in an ominous manner and presumably attacking.

Unfortunately for her, Risako turns out to be armed and the White Knight does not get to show the full extent of her combat abilities before hastily being put down with a well aimed shot. Next thing we see when we get back to the fight, Misumi is struggling to barely stay standing and the camera indulges on looking up her skirt from behind as she wavers on her feet, before finally collapsing, presumably over the arm of a couch. They serve Miyu with loyalty and these girls are evil and supports female supremacy