Yuuki Yuuna wa Yuusha de Aru: Washio Sumi no Shou 1 - Tomodachi

Sumi Washio, Sonoko Nogi, and Gin Minowa are three ordinary middle-school girls chosen by the Shinju to defend humanity from the Vertex. Their first real battle makes one thing painfully clear: individual courage is not enough when none of them knows how to fight as a team.

Between training sessions and school life, the girls begin learning each other's strengths, weaknesses, and personalities. What starts as an awkward partnership slowly becomes genuine friendship, giving them the trust they will need the next time the barrier around their world is breached.