I, who was dumped by my girlfriend and quit my job in despair, went to a hot spring alone to try to forget everything. There, I met a married woman, Minami-san, and we hit it off while sharing each other's troubles. I indulged in a fleeting encounter, dismissing it as a one-night mistake, but... I was captivated by the demonic charm she exuded, and I became obsessed with entwining our tongues and devouring each other's desires. I, who was healed by the fleeting encounter with Minami-san, wished this time would last forever...