One morning, mother Rie rushes to the bathroom, but when she opens the door, her son Yoshio is already there. The mother hurriedly closes the door, but when she opens it again, she finds her son's strange posture as he is bending over to relieve himself, and he is in pain because his penis is too hard from morning wood and he cannot relieve himself. Rie, who also wants to relieve herself quickly, holds her son's rock hard penis so that he can relieve himself quickly.