Reiko, a mother, finds out that her son Ataru is worried about his foreskin. Wanting to do something about her beloved son's troubles, Reiko takes off Ataru's pants, carefully uncovers his foreskin, and wipes it clean. Wanting her son to gain confidence, she takes his now enlarged penis into her mouth. Ataru is surprised, but is overwhelmed by Reiko's blowjob technique...