Rinjin -Tonari no Kirei na Okaa-san wa Suki Desu ka | 隣人～隣の綺麗なお母さんは好きですか？～

Protagonist Makoto is infirm, it is a young man who was not able to go to the school easily. And it had a crush on married woman Kyouko who lived nearly.

When a certain day Makoto is asleep in bad health, the voice is heard from the house of near. When peeking from the window, Kyouko was restricted there with the rope. The appearance that she faces the climax as it is is witnessed, surprising Makoto. it is a trap called the temptation though it wants to save Kyouko? Or...