At my old friend's house, where I hadn't visited in a while, his mother, Rioka, greeted me with her unchanging smile. Seeing her beauty brought back the childhood crush I had on her. Unable to contain my feelings, I picked up her lingerie from the dressing room and daydreamed about her. But then, Rioka herself caught me holding her panties and noticing my erection... Cornered, I took an unexpected action.