The story follows the inhabitants of a town where strange occurrences related to a spiral shape began occurring one after another.

[Source: Anime News Network]

Kimi lives in a small, low-cost housing complex located in the seaside town of Kurosaki where trouble seems to follow her everywhere she goes, and horrific incidents begin to occur. Is an ancient evil stalking the residents of Housing Complex C?

[Source: Variety; emended]

Maigahara Music College Affiliate School Maigahara Senior High (abbreviated as MaiMai). At this academy that gathers the most promising musical talents, there's a rumor circulating among students. "If you give an amazing performance at the school festival, you get special extra credit (or so they say)." Serina's grades are not very good, so she immediately believes the rumor and decides to form a band!

Rehearsals, sleepovers... even cosplay? Everything they can imagine will become part of their colorful daily life. But will they really be able to give an amazing performance and get the rumored credit!? The curtain rises on the story of the daily, funny lives of these girls!

[Source: Anime News Network]