As the ESIF continue their mission to plant the sapling from the Shinjuu beyond the barrier, each battle leads to many girls quitting due to being unable to handle the pressure. One of the remaining Sentinels, Suzune Kagajou, tells Mebuki and the others about the time she met the Hero Club. As Mebuki grows more frustrated by how dispensible Sentinels seem to be treated, she and teammate Aya Kokudo spend their day off together, where they both enjoy getting to know each other...