Trapezium

Green Leaves Entertainment is in the worst situation any Talent Management Agency can be in... they have NO talent! Desperate for an act, President Junko Tange targets the idol singer market and gives her flunky Matsuda his marching orders: get a girl group to manage, even if it means building one from scratch! Since complete singing groups rarely appear out of thin air, Matsuda's now in the difficult position of having to find girls with the right skills who don't already have contracts with Japan's music industry. That girl at the Maid Café? Good enough! A lead singer who's been fired from another group? Sure, why not? How about one who's only 13 years old? What could possibly go wrong there?

One day, Miu Takigawa suddenly receives a letter notifying her that she has been chosen as a member of a brand-new project. Half in disbelief, she heads over to the location stated on the letter. There, she finds seven other girls summoned there in the same fashion. The girls behold a giant, top-secret facility. They stand in bewilderment as they are told: "You are going to debut for a major record label as an idol group." A new kind of idol, never-before-seen, is about to be born here…

Otonokizaka High School stands on the border of three cities: Akihabara—a pop culture mecca that's evolving by the minute; Kanda—a conservative, cultured city where history and tradition reign supreme; and Jinbo—a quiet area reserved for a more mature, sophisticated population. Amidst this culture clash, the school now faces closure due to the enrollment of fewer and fewer students. With the school planning to close within three years, nine female students come together with one thing in mind—form a pop idol group to revive the school's popularity and keep it from shutting down. "In order to protect our beloved school, there's only one thing we can do... become pop stars!" Their goal is simple: Become an overnight sensation and use their nationwide media exposure to promote their school and bring in a wave of new students to the ailing area. A simple but solid plan, they figure. Naturally, they're nervous and wonder if this plan can really succeed, but for better or worse their new journey has begun... "All we can ask for is just a tiny bit of support from you. We truly believe that with your help, we can change the world around us. We will make our dreams come true!"

Yuna Ichihara's spring break is far from pleasant, especially after she sends off her best friend Sacchan, who is moving away. But while heading home, the timid girl brightens up when she encounters a boy who looks exactly like her first love—a prince from a shoujo manga. Subsequently, she finds herself in a peculiar situation with the mature Akari Yamamoto, a new neighbor who immediately befriends her. Now attending the same high school together, Yuna shows interest in Akari's brother Rio—the same mysterious and handsome boy she met during spring break. Likewise, Akari is falling for Yuna's carefree childhood friend, Kazuomi Inui. However, love is not at anyone's fingertips, as the relationship between these four contrasting friends faces complications, preventing them from moving forward. To discover the truth between them, they will need to confront their own struggles and uncover secrets hidden among themselves.