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The daughter-in-law of a younger brother with strong libido. Every day I'm at the mercy of my tsundere brother's wife who tempts me almost every day. As soon as my brother went to work, he started playing pranks on me. At one time, he intentionally shows off masturbation, and at another time, he shows off the couple's activities. And finally things happened. She sneaks in when I try to sleep ... and we cross a line that shouldn't be crossed ...