结城友奈是勇者 -鹫尾须美之章- 第3章 约定

As the battle against the intensifying enemy escalates, the Hero System evolves in preparation. However, it has become something far too harsh for elementary school sixth-grade girls to bear. Even so, the girls strive desperately, giving their all to live their daily lives. No matter what fate may lie in wait for them ahead, something unchanging and eternal has begun to blossom between them.