In order to repair his parents' marriage, he first needs to resolve their sexless marriage, and the aphrodisiac he prepared as a sign of filial piety takes an unexpected turn! When his father suddenly leaves, he's left with just himself and his mother, who has become pregnant with the aphrodisiac. Unable to resist, his mother finally lays her hands on his son's penis. Far from bringing harmony to the family, it has turned into incest, but perhaps this feels good in its own way.