My sister-in-law was cuckolded ~ I'll be happy in place of my brother! ~

The Tanihara family was forced to stay with their brother-in-law, Kenzo, for several days during a job interview. Meanwhile, his wife Nozomi felt a little nervous about her husband not on a business trip, but before she knew it, she had become friends and enjoyed a drink together for the whole evening. However, Nozomi's body aches after drinking alcohol, and she ends up masturbating due to the loneliness of sleeping alone. Without knowing anything, Kenzo visits her room, and her lewd appearance that she can't imagine from her normal sister-in-law, completely blows away her rationality, and before she knows it, she is covered in Nozomi lying on the bed...