Mihoshi is the cheerful yet chronically clumsy and absent-minded homeroom teacher for Sasami Iwakura and Misao Shinohara's fourth-grade class. Her personality reflects her original spacefaring character but within a purely human context. She serves primarily as comic relief, appearing briefly for situational gags.

She maintains an approachable demeanor with students, notably welcoming Misao back after an unexplained absence without questioning the circumstances or showing awareness of magical elements. While her teaching competence isn't detailed, she handles routine classroom duties. This version operates independently, without her usual associates like Kiyone or Noike. Her background, family, or potential development remain unexplored within the series, and she undergoes no significant character evolution, remaining a static source of humor through fleeting comedic moments reinforcing her airheaded traits.