In the Moon Kingdom, Mamoru Chiba become King Endymion and Usagi Tsukino as Princess Serenity become his queen but he married four her guardian include her.They lives happily as one family which they can interact each other without trouble.

A few month later...

All five of his wives gave birth to his children, all of them were a girl which Usagi gave birth a twin baby girl, except Minako's baby were a son.

Mamoru was happy he got a baby son.But, the Moon Kingdom hierachy want all the ruler and their children must a Queen and princess.If they had a prince, the prince will be dispose from the royal family if he alive or dead.

Mamoru upset upon knowing the Moon Kingdom hierachy system.He then looked at Usagi twin baby girl and he took one of them and placing at Minako's baby crib.He bring his baby son out the palace and he go to the Earth.

In Earth...

Arriving at Earth, he think where he want to place his son.

He then go to the old shrine in Mount Haruna, at Gunma prefecture.He place his son inside the shrine and he said.

"My son, i'm sorry so much upon bring you at this old shrine because all your mother want a baby girl and also the rule.

I can't predict how your appearance in the future, but I hope we will see again next time.Son, father love you so much"

Mamoru then leave with said."See you to the future, Ryuujino".

18 years later...

Ryuujino Chiba, 18 years old boy who just ended his high school at Gunma.His face looks like his father but he doesn't inherit from his mother as well.His body is average than his father and his hair colour is black same as his father but it slicked back.He is lonely boy who don't have any friend or somebody,but...

"I can rest in the house for a long time. I have not played a video game yet before the entrance exams or I forget something.

He arrived at his house and he sees a big box at front on the door.

"What the heck this box in front on my house.I don't have made any delivery but what is this?." nagging Ryuujino in his heart.

He then entered his house and he throw his school bag on the couch and he lying on the couch and he sleeps.

In Ryuujino dream...

"My son, how about you now? I didn't know about your appearance.I'll come on Earth to visit you but I don't know where your live since I left you at old shrine.This is my promise to you, son".

End of dream

He woke up from sleep.Then he looks at the clock and said, "Aww...I overslept until night, troublesome."

He go to the bathroom and get a shower.He take off his school uniform and he looks something at his lower back.

"Why is there a crescent shape on my lower back?" said Ryuujino and he continue his shower.

After taking bath, he heard the bell ringing out of the house. He went downstairs and opened the door until there was a pink twintail-haired woman in front of him.