OVA
Description
Mami Shimura stands among the five central female characters in the OAV *Graduation*, portrayed as a high school student confronting typical adolescent anxieties about her future post-exams. She measures 1.59 meters tall, with a birthday on January 4 and blood type B.

During her graduation trip, Mami grapples with personal challenges. In Episode 1, despair over potentially failing exams due to incomplete answers amplifies her academic fears. Her mother shares reflections on losing friends after childbirth, inadvertently making Mami feel responsible for those lost connections, though her mother reassures her that life unfolds naturally.

Mami’s impulsivity surfaces when she brings an excessively heavy snack bag to the train station, nearly causing the group to miss their departure. Later, she disembarks at a station for lunch and accidentally boards the wrong train, stranding herself at a remote mountain stop. This prompts her friends to search for her. While waiting, Mami converses with a retiring station master about loneliness and transitions, gaining perspective on cherishing present moments despite inevitable separations.

In Episode 2, Mami’s insecurities emerge through interpersonal dynamics. She jokes about friend Reiko’s arranged marriage, unaware of Reiko’s internal conflict, triggering Reiko’s angry departure. Mami faces uncertainty about her vocational school path and voices envy over Reiko’s perceived advantages. Her teasing masks anxieties about post-graduation mediocrity, particularly when comparing her vocational route to Mika’s college opportunity or Kiyomi’s racing ambitions.

Mami’s arc concludes with her accepting vocational school as her chosen path. As the friends commit to their futures, she humorously suggests swapping places with Reiko to marry the latter’s fiancé, revealing lingering ambivalence. Ultimately, she graduates alongside her peers, symbolically advancing toward her designated future despite unresolved reservations.

The character also appears in the spin-off *Sailor Victory* as part of a superhero team.