One Piece: Dream of Immortality - Chapter 477: Overture

This red dragon came from the vast wilderness, coveting all the powers of the world. He has held countless titles: Mountain Fury, Purgatorial Calamity, Red Emperor, Ember Dragon…The world trembles under the shadow of the great dragon. He ignited the surge of the magical industrial revolution. In the empire he established, wyverns roar, cannon fire resounds, steel behemoths appear in the sky and on the earth, and disasters from other worlds run rampant.“Submit, or die.”Cassius spread his sky-shading wings, looking down upon the trembling humans, elves, and dwarves beneath him, and spoke thus.………A story of a red dragon with a built-in player template conquering, ruling, and transforming another world.(Pseudo D&D, Fourth Catastrophe, Red Dragon, translation )

Summary 1) Tang Yuan suffered from a strange illness, so because of this, Tang Yuan pounced upon Xie Yu. A month later, Tang Yuan discovered that Xie Yu was a big shot in the world of tianshi (Taoist Masters), his existence the greatest fear of numerous ghosts. But that big shot was now obligated to marry him, because he was carrying the big shot’s steamed bun.

One year later:
Xie Yu: “Isn’t it time for our pup to be born?”
Two years later:
Xie Yu: “Don’t worry about it. Maybe you’re carrying a nezha (protection deity who was carried for 3.5 years in mother’s womb)?”
Three years later:
Xie Yu: “You really are probably carrying a nezha!”
Ten Years later:
Xie Yu: “Shall we not just give birth to this child? Since he’s obviously not ready, let’s beat him up!”
Pup: “I will remember this animosity for the rest of my life!”

After being carried for ten years and one month, the steamed bun was finally born. The steamed bun was white and tender at birth, extremely loveable. But on just his first day after being born, the steamed bun kicked his father, Xie Yu, in the face with his tender foot.

Summary 2) After Tang Yuan became pregnant with a steamed bun, life was a little difficult, with catching ghosts and also giving prenatal education to their child, yes, prenatal education. But he did teach, he taught for ten whole years. Then Tang Yuan said: Who wants a bratty steamed bun? Who wants me to give them one?

Shou, Tang Yuan, a heavens-defying genius VS Gong, Xie Yu, with off the charts gentleness

Not a scientific/natural pregnancy, no pregnant belly, the steamed bun is born in the final arc (though the steamed bun often appears), fluffy supernatural story, try not to be too scared.

- Description from Novelupdates

Chu Feng crossed the Jiuzhou Continent and inherited the Ancestor God Blood Pearl, cultivating until he became a Peak Martial Emperor. By chance, he saved an exquisitely beautiful woman with whom he fell in love and married. Unexpectedly, the woman turned out to be the Empress of the Jiuzhou Empire, and after giving birth to twins, a dragon and phoenix, she left without saying goodbye. Through numerous rigorous cleansing and marrow-washing sessions conducted by Chu Feng, these young children astonishingly developed supreme Divine Runes within them, capable of suppressing all forms of energy across Jiuzhou. Three years later, while dull and adorable, the invincible but unaware siblings, took advantage of Chu Feng’s secluded meditation during Crossing the Divine Tribulation, sneakily slipped out of the village, and embarked on a journey to find their mother.

Our protagonist Caam is a man from Earth that was reincarnated into this world as a demon. In order to survive, he spared no effort in avoiding the sparks of battle and without noticing it, he became strong himself.