I'm Giving the Disgraced Noble Lady I Rescued a Crash Course in Naughtiness 3 (manga)

On a mission to see the fugitive noblewoman Charlotte’s first-ever solo journey into town become a resounding success, fearsome sorcerer Allen sets out to clean the streets of any trash that might get in her way. His efforts earn him thanks from the townspeople and a gifted trip for two to a luxury hot springs resort that promises rest and relaxation. But there is no such thing as a free lunch, much less a complimentary vacation without a catch, and the fine print on this one brings Allen and Charlotte face to face with heart-stopping temptations and ferocious dangers that put their budding relationship to the ultimate test.