My mother-in-law and I were drinking together when we missed the last train and had to frantically find a place to stay. Business hotels were all full. We found a love hotel on the edge of the entertainment district... and my mother-in-law and I went inside. I couldn't take my eyes off my mother-in-law's voluptuous body, something I'd never really noticed before! Sensing my intense gaze, my mother-in-law's own private parts began to throb with desire! She changed into sexy lingerie she'd never even shown her husband, and we indulged in a passionate one-night stand! We were consumed by an insatiable sexual desire...