The main character, Yuichi Mamiya, failed to take the exam and is currently attending a prep school. And now his father, who is rarely at home for his job, has remarried and has a new family. Mifuyu, a mother who gives off a mature adult sex appeal, Natsuki, the eldest daughter of the gal style of the time, and Akiba, the second daughter of big breasts, although it is sober. Yuichi wanted to welcome his new family, but living with three women was too inspiring for him. The stress of taking his exam also overlaps, and his libido can no longer be suppressed. However, a parcel from someone arrives under Yuichi. What was in the package was a mysterious penlight that puts the other party in a state of hosting just by showing the light. Penlight Although it is possible to give a strong suggestion, it seems that the act that the other party really dislikes can not be controlled, so Yuichi starts by making friends as a family and gradually orders radical requests. Yuichi keeps vaginal cum shot on them anytime and anywhere, asking them to give birth to their own children to become his true family. And mothers and daughters who are dyed with lust will also seek more radical acts ....