I’m a behemoth, an S-ranked monster, but mistaken for a cat, I live as an Elf girl’s pet 3.

After hearing that a demon has been preying on the town of Renald, Aria, Tama, and Vulcan have set out to save these villagers from their plight. Together with a squadron of powerful knights, they make an assault on the demon’s lair—but soon find that they’ve walked straight into a deadly trap. To protect his master, Tama may have to steel himself and do something that would mean saying good-bye to these happy, peaceful days with Aria once and for all!