18 Years Later...

Time flies.

Although you and your wife almost never left the palace, your kingdom continuously grew stronger. By the time your youngest child was born, your ruling has extended to all the continent.

During the past 18 years, you never stopped the baby-making. Even with the long period of pregnancy, you still gave Kaguya nine more children (in order from youngest to oldest): Shukaku, Matatabi, Isobu, Son Gokū, Kokuō, Saiken, Chōmei, Gyūki, Kurama.

Today was the 18th birthday of Haruna and Haruka. From this day onward, they reached the adulthood and be counted as having enough abilities to inherit the throne.

Kaguya was exhausted because of giving birth and taking care of Shukaku, so you're the one who held the birthday party. At the end of the party, you gave each of your daughters a precious present and asked: "Are you please with this gift?"

Haruka: "I'm fine with anything gave to me by you, father."

Haruna: "Thank you, I like it. But there is one thing I like more."

You were curious: "Can you tell me what is it? I'll give it to you."

She grinned: "It's a secret."

That night when you're sleeping, you were suddenly awakened by the feeling that someone's touching. You opened your eyes and found that there was a naked girl on your bed, who just took your pain off. You recognized her: "Haruna..."

She placed a finger on your lips: "Sshhh. Lower your voice, or you'll awake Mom."

"No, I mean... what are you doing?"

"You promised to me, remember? This is the gift I want the most."

She stood above your cock and sat down. It went smoothly inside her vagina. There was a trace of blood marked the loss of her virginity, but she showed no sign of pain and began to ride your cock.

"Haruna, stop... this is wrong... we're father and daughter..."

"No, for me, this is what should be right. I love you for a long time."

"But... what your mother would think..."

"She didn't love me anymore. I have seen it many times: her love shifted from a child to another. She always favorites only the youngest. Father, you, on the other hand, always love us equally. But I knew you loved Mom the most, and this is the only way you can love me more than her."

You knew this is a forbidden union. But some of your darkest, deepest part really enjoyed it. Haruna's vagina was much better than her mother: she was tighter than Kaguya who has given birth many times, but no matter how big your cock swelled up, it always seemed fit. When she moved down, you felt warm and wet, and when she moved up, you felt cool and dry.

You fell into a thoughtless state until your cock sent a signal to your brain that it had too much pressure and being ready to release the army of your little swimmers. At that moment you panicked and tried to pull out, but Haruna's legs had already locked you up.

"Dad, fill me."

"But if I cum inside, you may get pregnant."

"Please, do it to me, please. When I took care of my younger siblings, I always dreamed someday I would have some myself. You loved mom because she can give you children, right? Anything she can do, I can do better."

She kissed you passionately. At the same time, her womb descended and her inside tightened, try to squeeze your cock to make it squirted all of its juice.

The pleasure clouded your mind. You hugged her and blew a big load into her uterus. She didn't let out any moaning, but her fingernail pressed your back, showed that she had a hard orgasm too.

Before quietly left your room, Haruna said: "Please don't tell mom or Haruka. This is our little secret."