Yuki Yuna is a Hero

Yuuna Yuuki is a member of her middle school's Hero Club, where she participates in various activities to help others. The club is summoned to battle Vertexes, mysterious forces threatening the world, through a mysterious phone app. Yuuna and her friends, including Mimori Tougou and the Inubouzaki sisters, Fuu and Itsuki, must transform into magical girls to fight these enemies. As they face the challenges, they also grapple with the harsh realities of their powers and what it means to be a hero.