One Piece: Human God - Chapter 4: Stranded Island lll

King Grey has unrivaled strength, wealth, and prestige in a world governed by martial ability. However, solitude lingers closely behind those with great power. Beneath the glamorous exterior of a powerful king lurks the shell of man, devoid of purpose and will. 

Reincarnated into a new world filled with magic and monsters, the king has a second chance to relive his life. Correcting the mistakes of his past will not be his only challenge, however. Underneath the peace and prosperity of the new world is an undercurrent threatening to destroy everything he has worked for, questioning his role and reason for being born again. 

Song Yuan accidentally picked up a 5-year-old child.

The child has bright eyes, chiseled features, and prideful demeanor. He referred to himself as “this prince” and his mannerism was wild, cool, and stuck up.

“This prince will never eat such lowly food!”

“How dare you flirt with other men behind the back of my imperial father?”

“He insulted this prince and you sided with him? This prince will sentence his entire clan to death!”

Song Yuan was very disturbed. The DNA test had confirmed that the child was, indeed, her son, but why did he act like he was delusional?

More importantly, who was the father of the child?

The prince was going mad from worrying; Imperial Father, if you don’t come soon, Imperial Mother is really going to cheat on you!

- Description from Novelupdates

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

One day, Luo Jian woke up from his sleep and found himself in a locked chamber where the door and window were all sealed. A note with a few lines written on it was tacked to the wall: “Escape from this room within an hour, otherwise, you will die.”