Mizunuma

Mizunuma (水沼) is a character in the anime and manga series World Trigger. She's 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 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 Mole Mods attacked the school, she had her class evacuate according to procedure.

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

Trivia

 * Her name literally translates to "water swamp".
 * Compared to her original design, Ashihara made sure that he made her cuter.