18+ Shoushinmono na Veteran Chuunen Boukensha to Dorei no Kitsunemimi Shoujo

Gino, an adventurer, has survived as an adventurer for more than 20 years since he left the countryside at the age of 15 thanks to his cautious personality. Gino, who had already reached the veteran level, had gained a certain position and wealth but knew that his appearance was not pleasant to women, so he retired as an adventurer to marry and build a family. He gave up the opportunity and decided to buy a sex slave with the property he had saved so far. Gino chose to continue his adventurer business tomorrow, but after the sex slave came home, Gino's life began to change little by little...

(Source: Takeshobo, translated)