Chloe: Incubus Crest Mage

The game's goal is to explore and beat dungeons. You get money for completing them. No combat in casual mode. The main female characters starts as a strong girl and gets corrupted while she cucks the love of her life along the way. When you reach 100 points of hornyness, you are forced to go back to the town, where you will get a scene with a character to relieve your sexual desire.
A Mage called Chloe, who belongs to the Magical Society, is visiting a mining town with a boy she has known since childhood. In the middle of their trip, a small accident occurred... This was the beginning of the sweet girl's tainted story about cucking the boy she loves. (Slow burn, girl doesn't get fucked right away)