Mother and son lead a lonely life, huddled together. Raising her son to be a good man was her top priority, and as a result of putting her own needs on the back burner, Yuu fell into a deep state of sexual frustration. Masturbation became a daily routine, and it became more and more extreme with each passing day. The son could no longer bear to see his mother like that, and decided to use his body to comfort her as a man. Yuu was perplexed by his son's unexpected actions. He desperately resisted, not wanting to let his son enter a forbidden world... but at the same time, his body, hungry for a man, was beginning to ache...