The Queen's Knight, Volume 10 (Ritter der Königin #10)

Phantasma's dire situation has brought out a change in Ehren Hwerusute. The once warm and loving person has been replaced by someone consumed by rationale and logic, whose sole goal is to save Phantasma from its long-time curse. But his drive prevents him from seeing that the one thing he needs to help the kingdom, the very principal upon which the kingdom is built, is love. Meanwhile, Libera has her own problems when she learns firsthand about the pain love can bring, especially if it's for someone unexpected! And Reino proves he isn't invincible to love either as he confesses his feelings to an unrequited love...