Failure Frame: I Became the Strongest and Annihilated Everything With Low-Level Spells (Manga) Vol. 4  (English, Paperback, Shinozaki Kaoru)

With Seras Ashrain's true identity unceremoniously revealed, she's on the run from the Black Dragon Knights, the strongest knight company in the world. To prevent Touka from getting wrapped up in the hunt for her, she escapes the city and disappears. Spurred by Seras' protective spirit, Touka goes after, hoping he can reach her first. Unfortunately, for them both, Civit Gartland appears. The arrival of the strongest man in the world changes everything.