RE: Zero -Starting Life in Another World-, Chapter 3: Truth of Zero, Vol. 7 (Manga) - Tappei Nagatsuki

I dedicate this to my wife, Theresia van Astrea...A single White Whale is a nightmare; three might just be a harbinger of the end With Wilhelm, the Sword Devil, swallowed by one of the vicious demon beasts, Subaru is desperate to turn the tide of battle-and against all odds, he might have figured it out. This may be their only chance to end the White Whale's four-hundred-year reign of terror, and it all comes down to one man devoted to both love and the blade...