Ruru had come to visit her paternal grandparents' house this winter. She saw her uncle sleeping on the veranda. His crotch was erect due to a mere physiological phenomenon. Unaware of sexual knowledge, Ruru was curious and touched his crotch out of interest. She pulled down his pants, touched him directly, and out of mischief, she jerked him off, causing him to ejaculate. Her uncle had woken up and noticed it all along. Since then, the perception that 'Ruru is a naughty girl' spread among her uncles, and Ruru became a target for middle-aged men...
