The love I have for my mother may be a little different than others.Kentaro realized this when he heard his father and mother working hard to conceive a child.When he heard his mother Chisato's lewd voice, what came up was jealousy towards his father, not the joy that his brothers and sisters could make.I couldn't stand that my mother was filled with her father's sperm.Kentaro plots to inject his own sperm to expel her father's sperm from Senri's vagina.Chisato is puzzled when she finds out about her child's feelings, and she rejects him violently.But on the other hand, she also realized that only her mother could calm Kentaro's distorted desires.