The Lustful (1994)

Shigeichi and Akiko were a loving couple. However, ever since Shigeichi collapsed two years ago, they've felt like they're living in hell. Akiko takes care of Shigeichi, who is paralyzed from the waist down. But when her disabled husband desires her, she feels a pang of sadness. Moreover, Shigeichi almost always desires her in the evenings when the guesthouse gets busy, and the young guests at the guesthouse are tempted by Akiko's allure...