Mika Inamori holds the position of student council secretary at Seioh Private High School. An only child, her parents' indulgence fostered dependency and a sheltered disposition. She possesses dark blue hair, brown eyes, and stands 1.45 meters tall, with a birthday on December 24.

Before Manami Amamiya's arrival, Mika operated as the council's sole member after the previous president left. Her organizational struggles and chronic clumsiness—often causing trips or collisions—transformed the council room into a chaotic storage area. Academically and athletically average, she showed minimal interest in most pursuits except daily horoscope checks, which she prioritized even over punctuality.

Manami Amamiya's entrance as president revitalizes the stagnant council. Mika initially reacts with hesitance toward Manami's unorthodox energy and methods but soon forms a fervent attachment, regularly expressing affection through hugs from behind. Guided by Manami, Mika engages more deeply in council activities, finding genuine fulfillment in responsibilities like room renovations and school festival preparations.

Despite this progress, Mika retains naivety and immaturity. When dozing off during a festival video project with Manami and Mutsuki Uehara, she credits the finished work to "little people," underscoring her lingering childlike worldview. Her relationships extend beyond Manami, including a longstanding, seemingly incongruous friendship with the sporty Mutsuki dating back to their enrollment. Across documented events, Mika's growth consistently emerges through collective council efforts, amplifying her involvement while preserving her core vulnerability and sincerity.