割り切りカノジョ～宝くじ当てたら姪っ子とイチャラブ生活が始まった～

Nagoya wins the lottery, after buying everything he ever desired he finds his loveless life boring, wishing for a girlfriend his niece, Mai, enter his life. Mai just so happens to be in need of money, and thus their romantic and immoral relationship full of hot incest and compensating dating begins.​