Yuuki Yuuna wa Yuusha de Aru  

Yuuki Yuuna Is a Hero, 結城友奈は勇者である

In her daily routine, Yuuna Yuuki is known as a hero in school. She's part of the Hero Club where she strives to help others and bring joy to everyone around her. But Yuuna, always ready for any challenge, is about to become an even greater hero. Mysterious destructive forces called Vertexes are threatening the world she loves, and the Hero Club receives a call from a strange phone app to save it. Along with her best friend Mimori Tougou, as well as sisters Fuu and Itsuki Inubouzaki, they must transform into magical girls in order to battle these Vertexes. While balancing schoolwork and performing shows for children, Yuuna and the Hero Club fight for the survival of their world and confront the truths about their own powers. They also discover what it means to truly be a hero.

The series was on hiatus between the October 2015 and March 2017 issues due to Touko Kannos health.