I remember the tags of it specifically but for some reason can't remember the exact name of this or find it by filtering by the tags. It's a typical fantasy setting but the game starts you in prison where you train / do missions with some succbbus queeen and hook up with the queen's guard or something before they assign you a task to bring down this entire town via corruption(The prologue/tutorial section) . Then you have a small house in this dock side of town where the game fully starts. There's like an overall corruption meter for the entire town and its a harem game where there's like 4 key masters for the kingdom you have to influence among other characters by pretending to be a hero and helping out and doing quests and such. It's 2DCG as well.