Ore dake Haireru Kakushi Dungeon

Noir, the third son of a noble family in financial decline, stumbles upon the legend of a dungeon containing rare treasures and valuable items. After losing a job opportunity, he discovers a unique ability that lets him generate, assign, and modify skills. To use this power, he must earn points by performing specific actions, such as enjoying flavorful food and engaging in intimate encounters with attractive individuals of the opposite sex.