A peaceful morning. Under the son's futon, something rustles quietly. When he wakes and pulls back the covers, he finds his mother, Mari, lovingly sucking on his morning wood. "Mom, you came again this morning?" "Because... I can't live without your morning wood anymore..." A few weeks ago, her son came crying to her, his erection so severe he couldn't zip his pants. That time, Mari used her hands and mouth to pleasure him until he was on the verge of bursting. But overwhelmed by the sensation, she ended up letting him creampie her. Since then, Mari has craved her son's morning wood every day, and their forbidden bond grows deeper. Her obsession with his erection transforms from maternal affection into something far more complex and passionate.