Sayuri, who runs a knitting class, liked her son Tatsurou. A mother who smiles gently and knits with smooth hands. However, Tatsurou was dissatisfied that his mother's friend was learning to knit from her. One day, when Tatsurou went to pick up his mother, who had gone to teach knitting at a friend's house, he saw the two of them in an abnormal embrace. Then, unable to contain his jealousy towards his friend and desire for his mother, Tatsurou impersonated his friend and hugged his mother from behind…
