結城友奈は勇者である -鷲尾須美の章- 第２章「たましい」

Duty has already reshaped Sumi Washio's year by the time the second film opens: the Vertex still rise out of the sea toward the Shinju, and she, Sonoko Nogi and Gin Minowa are the three the Taisha sends. The barrier over Shikoku is all that stands between their hometown and everything beyond it. The middle chapter of the Washio Sumi Chapter trilogy carries the light novel prequel forward, two years ahead of Yuna Yuki's Hero Club.