Becoming the unfaithful wife who neglects her husband and is captured by her unsuspecting and adorable younger brother's penis - Inamori Miyu SAN-119

The husband's younger brother stayed at "Meiyou's" house while looking for work. One day, Meiyou accidentally witnessed her brother-in-law masturbating. Initially embarrassed, her pre-existing lust was aroused, and she engaged in erotic behavior with him. Afterwards, Meiyou's relationship with her brother-in-law grew increasingly intimate under her husband's nose, eventually venturing into inappropriate territory. This is a comedic story about Meiyou, who enjoys this kind of game, and her brother-in-law... Did her husband eventually discover it?