Bocca learns that the girl who had aimed her arrow at him is named Tone. And she appears to hate Melos Warriors. He also learns that the technique that she uses to drive the "working mouse away" is a Melos technique. However he notices that she has no stigmatic mark on her arm. On learning of Tone's return to the valley, Miri Kanaya becomes agitated and recalls back her earlier years, of how and why she joined the Monster Union. The relationships between her, Tone, Eichi Hikoyama and the blue-eyed boy are also revealed.
谷に帰ってきた”遠音”という少女、子供たちの悲しみの涙を集める「働きマウス」たちを「鳴弦」という技で一瞬にして追い払う。
メロスの戦士であることが判明したのだが、遠音はメロスの戦士を憎んでいたのであった・・・
