NACR-646 — Umi Natsukawa, A Lewd Wife Who Seduces Men Without Discrimination Whenever She Gets The Chance

My younger brother's wife, Umi, who lives with me, seduces me every time he goes on a business trip... What's more, during the three days that my brother is away on a business trip, she brings one man after another to her house and cheats on me openly, as if to show me off. However, I can never tell my brother about it. That's because I also had a relationship with my younger brother's wife...