小夏夫婦の息子は、最近元気がない。仕事や人間関係に悩み、会社も辞めてしまった。夫婦は心配し、元気を取り戻させようと声かけしたり食事も精のつくものにしたが気持ちは上向かない。ある夜、夫婦で夜の営みをしていた。小夏は息子がそれを覗き見しているのを、そして勃起しているのを見てしまう。翌日、夫が出かけた後、小夏は息子と話しあった。昨日の夜のこと、そして勃起していたことを。小夏は、それで元気になるならと息子の股間をまさぐりはじめた。息子は驚くが、母を女として意識し興奮してしまい…
Konatsu and her husband's son has been down lately. He's been struggling with work and relationships, and has even quit his job. The couple is worried and tries to cheer him up by talking to him and giving him nutritious meals, but his spirits haven't lifted. One night, while the couple is making love, Konatsu sees her son peeking in and notices his erection. The next day, after her husband has left, Konatsu talks to her son about what happened the previous night and his erection. Konatsu, hoping it will cheer him up, begins to caress his crotch. The son is surprised, but becomes aroused as he sees his mother as a woman…

– JavGG.net