Subarashiki Kokka no Kizukikata

素晴らしき国家の築き方

Based on the erotic doujin game by Iris Field (アイリスフィールド). Ariadne just became the princess of the small country Avon. But already it's in a deep financial crisis. In an effort to save the country she declares that Avon must focus on developing their sex industry. (Source: DLsite, translated)