Eripyo, a part-time worker, has been devoting herself to her idol ever since she first felt a thrill in her life for Ichii Maina, a member of the underground idol group ChamJam in her hometown of Okayama, at the Tanabata Festival three years ago. She pours almost all of the income she earns from working at a bakery into her idol, wears only the red tracksuit she wore in high school, thinks about her idol 24 hours a day, and is always busy spreading her knowledge.
One day, after four years of supporting Maina, talk of ChamJam moving to Tokyo comes up. While Eripyo is more and more dedicated to supporting her idol, Maina is conflicted about her own lack of popularity.
(Source: Japanese = eiga.com || Translation = MyDramaList)
~~ Adapted from the manga "Oshi ga Budoukan Ittekuretara Shinu" (推しが武道館いってくれたら死ぬ) by Hirao Auri (平尾アウリ).