Naruto: I Am Not Really Related - Chapter 9: Even The Air Outside Is dangerous

500 years ago, Chen Xi was devoured by a crack in the void and was transported into a cultivation world.

500 years later, he returned back to Earth after enduring through several hardships and discovered that only 5 years had gone by.

…

In the courtyard, beauty at the side, a candle flame wavering.

A gush of clear wind, half a full moon, the peach tree remains unchanging.

…

Wait, whose kid is this?! Why is she calling me papa? Gazing at the little girl in front of him with skin as pale as jade, Chen Xi froze.

…

　
Returning home from cultivation, starting as a stay-at-home dad.

In this life, not fighting to be a king nor claiming to be a tyrant, only praying to peacefully be a wife-pampering mad devil and a child-protecting daddy!

- Description from Novelupdates

Saying 5000 year-old-dragon has an impressive ring to it, yet that dragon was an extremely harmless, herbivorous being. However, because of his uselessly giant figure and scary appearance, he was mistaken for the Demon King’s executive and provided by the nearby village with a sacrificial maiden.

Fundamentally cowardly and timid dragon tried to send her away, but the extremely enthusiastic sacrifice didn’t want to give up. Inevitably, he lied: “Okay, I just ate a small portion of your soul, so you can go back already”, but the maiden with outrageous assumptions has misunderstood that she became the dragon’s kin.

Then, out of all things, she began to manifest strange power on the basis of her wrong assumptions – in turn, the helpless dragon, by some mistake started a rebellion against the Demon King.

Rebellion or whatnot, he wasn’t even his subordinate in the first place.

There was war in hell. The flames of hell turned against itself and the demons tore each other apart. It was a terror to behold; one that the devil himself could not escape. Every other terrestrial being was against him, trying to take his power and throne.Knowing that he wouldn’t survive it, Lucifer fled from hell into the earth feeling regretful. His fall came from a woman whom he thought he had grown to love. But at that point, it all didn’t matter….he needed someone to will his power to…it was much better than leaving it in the possession of those demons. And while he was running out of time, he immediately gave it all to a prince in his mother’s womb before he vanished into eternityThe prince; Francis was born and he grew just as powerful and as fierce as the devil himself. He was a devil, but he ruled on earth…unstoppable and strong willed. He was hardly referred to by his name and was mostly called the devil, right from when he was a child after a powerful seer revealed the reason behind his power.But even though Francis had all the power he wanted and would ever need, he had one restriction. To keep history from repeating itself, he was given just one rule, never to love a woman.****But on the far side; in a village, lonely princess lived with no hopes of survival even though her father, the king was still alive. But it wasn’t much of a surprise since the royal family itself was the reason behind the princess’s tight chances of living. Even her mother the queen couldn’t save her because she was very much afraid of her husband, the king and his second wife who bore him sons.They lived their lives in fear, not until one day, the queen was about to take her last breathe. She was poisoned by the king’s wicked wife. But before she died, she had just one wish: that her daughter Aurora avenges her death and take over the village by attaining a level of power and authority that could only come through one means….and it is to “Marry the devil” the strongest, ruthless, merciless and powerful king that lived.She knew she needed him to love her if she ever wanted to access his powers and make him revenge for her.And so, Princess Aurora was set on a journey to marry the devil who was warned to never love a woman.What happens when the devil falls in love?Would he receive the same fate as the previous Devil?Or will love change his fate?Will Aurora's determination lead her to a world of power, love and strength?Or will the devil's fate cause her a life time of peril and pain?

A con-man and policewoman that are legends of their respective professions suddenly die, then are reincarnated and return to the Tang Dynasty of ancient China as little kids.

Accepting their second chance and forced restart, they choose to use the modern knowledge and specific talents that they have in their previous lives in order to live comfortably in this new life.

- Description from Novelupdates