Honoka's Bizarre Adventure: µ's Is Unbreakable

In the school year of 2013, it was announced Otonokizaka High School would close. Determined to keep their beloved school open, three schoolgirls form an idol group called µ's int he hopes of drawing enough attention to the school in the hopes of keeping it open. But when an arrow awakens latent Stand abilities in Tokyo, these girls find their once peaceful goal of saving their school through singing and dancing mired with deadly combat, where one mistake could mean the difference between life and a gruesome death. Now, these girls fight not only with their singing and dancing to keep their school open, but with the fists of their Stands in order to protect the city they call home and love, not only from those who would use this arrow for their own nefarious purposes, but also from a parasitic demon that rooted itself into their city before they were even born... (A loose adaption of Part 4, Diamond Is Unbreakable, albeit with different characters and Stands.)H