Rikako Aida

Chika Takami, a self-proclaimed normal girl, has never been involved in any clubs and lacked any notable talents. However, after a visit to Tokyo, she discovers a stage where even an ordinary girl like her could shine—the world of school idols. Inspired by the former superstar school idol group μ's, Chika is determined to start her own school idol club in her seaside hometown at Uranohoshi Girl's High School. But even before gathering any students to join the group, the aspiring school idol finds her greatest obstacle to be student council president Dia Kurosawa who stands firmly against the creation of the club. Just when it seems there is no hope, Chika meets Riko Sakurauchi, a transfer student from Otonokizaka High School, home of μ's. Somewhat shy but a talented piano player, Chika believes her to be a promising recruit, though convincing her to join is easier said than done. In spite of that, Chika chooses to charge forward and overcome the obstacles keeping her from forming a school idol group that shines as bright as the nine that came before her. [Written by MAL Rewrite]

To the students of Karai High School, Nanako Yukishiro is a pretty, calm, and cute 16-year-old. However, Nanako is no ordinary girl, as she cannot speak! Instead, Nanako communicates through senryuu—17-syllable-long poems. Sixteen-year-old Eiji Busujima used to be delinquent in his middle school years. However, he has since turned over a new leaf due to his newfound love of senryuu. Despite his menacing looks, Eiji gets along well with Nanako as a fellow member of the Literature Club. Even though Nanako is mute, the adorable pair have no problem communicating with each other. Senryuu Shoujo is a light and relaxing story of two teenagers' daily lives. [Written by MAL Rewrite]

Riko Morisawa, a young girl from Tokorozawa, goes on a trip to Tokyo with her friend Mana. While they roam around the shops of Ikebukuro, Riko spots a billboard about an event related to the Little Battlers eXperience (LBX) line of toys. Mana urges Riko to purchase one, and although initially declining, Riko soon avails a few LBX kits for her father. Upon opening one of the boxes labeled "LBX Assassin," a temporal rift manifests itself and transports Riko into the sky of an alternate Japan. While she falls at terminal velocity, an exosuit based on the LBX Assassin materializes around her, saving her from the descent. However, on the ground, she encounters the Mimesis, lethal metallic creatures that invade world after world. As she flees away from these monsters, Riko is rescued by four other LBX-equipped girls. After learning about Riko's predicament, the group decides to recruit her into their combat unit—"Soukou Musume." Soukou Musume Senki narrates how the unit endures the trials and tribulations they face, developing unbreakable bonds along the way. [Written by MAL Rewrite]

The film chronicles the attempt of the team to take back Unato castle.

When Kanan and Dia disappear while visiting Mari on Italy, Chika and the rest of the Aqours have no choice but to reach the "Belpaese" themselves and search for them.