Seraph of the End manga volume 21 features story by Takaya Kagami and Daisuke Furuya with art by Yamato Yamamoto.

Guren catches up to Yuichiro's captors, but does nothing to save Yuichiro from the Hyakuya Sect’s clutches. Suddenly, Mahiru appears and attacks Mika! Meanwhile, Noya, the other demon inside Guren, stands and watches the situation unfold... Despite Guren’s apparent betrayal, Yuichiro still has trust in him, but will Yuichiro decide to run away and escape with Mika once and for all?!