A chronicle of an extramarital affair between a middle-aged man and woman who meet on a dating app for married individuals. They are deeply immersed in a second love affair, as profound and bittersweet as coffee. (Hōjō Maki JUR-480)

Tired of his uncaring wife, Ippei registers on a dating app for married men. Despite some guilt, he meets Maki, a married woman with similar troubles. Sharing a love for coffee, they gradually open up to each other. Although confused, Maki suggests going to a hotel, but Ippei advises her to take things at their own pace. Attracted by Ippei's sincerity, Maki invites him to her home a few days later, where they slowly seduce each other, enjoying their extramarital affair like coffee...