Yuna has been married for several years and struggles with her relationship with her husband. At a long-awaited school reunion, she reunites with her admired teacher, Koizumi. They exchange contact information and become close enough that Yuna often confides in him about her problems with her husband. One day, while out shopping, Yuna sees her husband walking hand in hand with his mistress, leaving her feeling devastated. In this vulnerable state, she reaches out to Koizumi for comfort. He embraces her gently, sharing in her pain but also unable to resist their growing attraction. As they hold each other closer, their bodies pressed against one another, sweat begins to form on both of them...
