Issak Vol. 5 (Kodansha, 2023)

Through a bold plan and sheer tenacity, Issak and the defenders of Rosenheim managed to hold out long enough for reinforcements to arrive. But there are sacrifices; among the many felled is the loyal Captain Bormann. Unbeknownst to them, the Spanish have also suffered a great loss-Lorenzo has murdered the crown prince and is lost in the wind, leaving their forces in disarray. When Prince Heinrich is ambushed by Spinola's forces on his return to Castle Fuchsburg, Issak races to rescue him. But when he finds him with Lorenzo's gun trained on his chest, he must make a choice-give up his master's gun and his chance at revenge to save Heinrich's life, or forfeit both of their lives in order to exact the vengeance he has sworn.