The Anime Lad
Noir is the third son of a poor noble family, which provides a title but limited employment. A mysterious hidden dungeon offers a more promising route. There he gains the power to create and modify skills, provided he can pay the cost in life points earned through pleasurable experiences. His path toward adventuring competence therefore includes combat preparation, social improvisation, and a highly unconventional rewards program.
Super Eyepatch Fox
A failed job leaves minor noble Noir searching for options. He discovers a legendary dungeon and gains rare skills that can create, grant, or edit other abilities. Using them consumes life points. Enjoyable food and intimate affection replenish the supply. So dungeon progress depends on pleasure, planning, and shameless optimization. Fantasy advancement becomes a very suggestive budget problem.
Gigguku
This show sees a fantasy skill tree and decides affection can refill the meter. Then it builds the entire economy around that answer. Noir's hidden dungeon gives him absurdly flexible powers, but every use has a life-point price, so fun becomes fuel. It is brazen wish fulfillment with enough rules to turn each indulgence into a tactical decision.
Father's Basement
Anyone hoping the ecchi elements are optional background noise should leave that hope outside the dungeon. Noir's abilities consume points earned through pleasurable acts, so the premise makes fan service part of the operating system. The useful distinction is that it also treats the power as a resource puzzle. An impoverished noble gains tremendous flexibility, but every edit needs funding and every shortcut creates another calculation.