I´m a Behemoth, an S-Ranked Monster, but Mistaken for a Cat, I Live as an Elf Girl´s Pet, Vol. 7 (manga)

Aria and the gang have defeated evil the Earl of Gladstone, and put an end to Leis’s sad chain of revenge. They even felled the undead dragon! Now it´s time to reap the rewards: an enthusiastic welcome into the city they saved, a promotion to A-rank, and a well-earned rest! But soon enough, a new request heralds the start of a new adventure…!