Mizunuma

Mizunuma is Osamu and Yūma's homeroom teacher.

Appearance
Mizunuma is a young woman of average height and long brown hair.

Personality
She is usually very kind, and seems to be popular with her students.

Introduction Arc
She is Osamu's homeroom teacher and introduces the class to Yūma. She later informs him that rings were not allowed. When the Marmods attacked the school, she had her class evacuate according to the procedure.

Large-Scale Invasion Arc
When the Trion Soldiers begin pouring in, Osamu orders her to evacuate the students, to which she complies.

Trivia

 * "Mizunuma" (水沼) literally translates to "water swamp".
 * Her Japanese voice actress, Umeka Shōji, also voices Yuu Kunichika, Itsuki Fujisawa and Yūko Kumagai.
 * Compared to her original design, Ashihara made sure that he made her cuter.