
Yoji returns home to find his brother and sister-in-law struggling with infertility. After accidentally catching a glimpse of his sister-in-law Ai's secret, she catches him watching. Desperate to conceive, Ai seduces Yoji, suggesting that if her husband's sperm won't work, his brother's might. Unable to resist her sweaty, desperate advances, Yoji eventually gives in and releases himself deep inside her.










I really love Ai Mukai, who has grown her hair longer since she was younger and now exudes a more mature feminine charm. In this work, where she plays a housewife and stays within the home, there's a certain sexiness to the lingerie, but it feels like she's winning by relying on her raw, natural charm without stockings or garters. Her full nudity is beautiful, and the way she thrashes her long hair while climaxing is incredibly erotic. The 'sweat-drenched' aspect, as the title suggests, is also a big plus.
It's a well-crafted drama. The narrative structure is solid, and it's carefully paced to keep the viewer immersed. The way the actors convey emotions through their eyes is excellent, and their strong performances add real depth to the work.
I love this actress, so I bought all her works. Her expressions, body, and lingerie looks are all stunning. If she were to get divorced because of a situation like this, I'd gladly pay all her alimony just to marry her and have kids with her. Honestly, I could even forgive her if she were pregnant with the 'brother's' child. (Though this is just a fantasy for someone like me who has no money and zero experience with women.)
The brother-in-law returns to his brother's house and witnesses them having sex on the first night. The sister-in-law (Ai Mukai), noticing him watching, performs fellatio on her husband to provoke him. The next day, she corners the brother-in-law, asks if he was excited, and then performs fellatio and has sex with him. She seemed to want his sperm to conceive a child with her husband, but I felt her getting increasingly addicted to the sex with him. The brother-in-law also feels guilty toward his brother and wants to stop, but his intense, sincere sex—as if he senses her true feelings—is a highlight! The sex in the final act is incredibly erotic!! After one round, there's cleanup fellatio, then a second round, more cleanup, and the final act. Some reviews mentioned disliking her wet hair, but I actually found it erotic. Also, she hadn't over-trained her body in this, so she had a feminine figure with firm breasts, which was great!
*Mr. Mukai has been good lately. It's very sexy and really beautiful. The plot is a bit unreasonable, but you can just keep it going and enjoy Mukai-san to the fullest.