Yuki Yuna Is A Hero The Movie: Washio Sumi Chapter

Synopsis:
Yūna, Mimori, Fū, and Itsuki are all members of the Sanshu Middle School Hero Club, dedicating themselves to helping those that request help. One day in their regular daily lives, the Hero Club members are suddenly caught in an explosion of light and transported to a strange forest, where they encounter mysterious monsters known as Vertex which seek to destroy the Shinju (神樹, "Divine Tree"), the guardian deity which protects and blesses humanity. Using a special phone application granted by Taisha, an organization dedicated to the Shinju, Yuna and her friends must transform into "heroes" with magical powers to protect their world from imminent destruction.