Oshi ga Budoukan Ittekuretara Shinu

Eripiyo is an extreme idol fan. She is wildly enthusiastic about Maina, the shy and lowest-ranking member of the minor underground idol group ChamJam that performs in Okayama Prefecture. Eri will continue to give her complete devotion to Maina until the day she can perform at Budokan. (Source: Anime News Network, edited)