Yuuki Yuuna wa Yuusha de Aru: Yuusha no Shou

Sanshu Middle School's Hero Club has returned to its everyday activities, with Sonoko Nogi joining Yuuna, Karin, Fuu, and Itsuki. For a while, the girls seem to have regained an ordinary life. Then they notice an impossible absence: Mimori Tougou is gone, and nearly every trace that she ever existed has vanished with her. Only the Hero Club still remembers their friend.

The girls regain their ability to transform and set out to find her, leading them to a truth beyond the boundaries of the world they knew. Bringing Tougou back does not end the crisis. Instead, their actions carry new consequences, especially for Yuuna. Determined to protect her friends' smiles, she begins bearing a burden she cannot easily share, turning her hardest battle into one fought in silence.