The Yoshino mother and son returned to their hometown to visit their father's grave and, at the kindness of their mother's friend Rika, stayed for a few days. The mother and Rika, reunited after a long time, reminisced about old times with smiles. However, their son Atsushi was weak to alcohol and quickly passed out drunk. Rika, tipsy and in high spirits, felt affection towards the unguarded sleeping face of Atsushi and secretly kissed him… Excited by the secret affair with his admired woman, Atsushi couldn't sleep and sneaked into Rika's room late at night. Then, he didn't care that his mother was sleeping right next to her as he climbed on top of her…
