After graduating from university, my brother got a job at a large corporation and started living alone. However, after one year of working non-stop, he had become what is known as a 'corporate slave.' Seeing her brother in such a changed state, his younger sister, a female middle school student, said, 'I don't want a big brother like this,' and encouraged him with her breasts. This is a three-day story of a brother and sister where the sister's maternal love and H-cup breasts gently envelop her worthless brother.
