Unexpectedly witnessing his parents' nighttime activities. Yuusuke was shocked to see his mother, Chisato, wearing an expression he had never seen before. He couldn't bring himself to be happy about the possibility of having a younger sibling. What surged up within him was intense jealousy. Yuusuke wished that his beloved mother would love only him. Driven by the impulse to fill his mother's vagina, which had been filled with his father's semen, with his own sperm, Yuusuke forcefully pinned down Chisato and declared, 'I'll make mom pregnant,' as he injected his hot semen into her deepest part.
