在公司做小职员的单身宅男川濑凉（大野庆太 Keita Ohno 饰）新搬入一栋公寓，享久并且结识了美丽动人的邻居杉浦五月（苍井空 Sola Aoi 饰）。偶然的机会阿凉发现这栋公寓的隔音效果非常不好，享久趴在墙上可以听到隔壁五月的一举一动。寂寞的阿凉对此春心大动，通过偷听隔壁的声音来满足自己的窥探欲已然成为他生活中最大的乐趣。阿凉终日窃听着五月的生活，窃听的设备也越发专业。他喜欢通过声音来幻想着五月洗澡，做爱的样子，然而日子久了意淫已经不能够满足他的欲望，阿凉开始通过邀请五月吃晚饭，去五月打工的店面打探来一步步的接近她，介入她的生活。然而随着阿凉对五月生活的渐渐深入了解，他发现，原来五月的男友小西雄太是一个心理变态，而自己的房间也被他安装了摄像头与窃听器…
回复 :影片原作是中村珍所著的女同漫画《群青》，讲述永泽和篠田两个女性之间的爱恨纠葛——永泽从高中时代起就爱慕着篠田，篠田在结婚后受到丈夫的家暴，一句“你帮我把他杀了吧”，让永泽成为了杀人犯。
回复 :There is a girl who is a student at a tailoring school. She has a friend who has a boyfriend and is always having sex. She herself, however, remains a virgin. She sees her brother masturbating one day. She asks her friend to have sex with her brother. Her friend asks her to spread it for her older brother in exchange. It is a deal and the four go on a hike.
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