One Piece: King of the World - Chapter 427: Sanji—”I Haven’t Even Gotten on the Ship Yet! I’m Not a Pirate, Don’t Arrest Me!

After rebirth, Long Xiaoyuan went into raptures because he was in poor health in his previous life. However, he suddenly found that his soul was in the body of a fatuous and self-indulgent emperor.

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.”

There is a sequel called Reincarnation Night (轮回之夜) that takes place in the same universe but has different main characters

- Description from Novelupdates

+18 Warning Mature Content - Reader discretion advisedA wolfless ward and an illegitimate dragon prince must overcome immeasurable barriers to free themselves from the stigma they have been placed under.Abandoned as a child Lily Artemis Wolfman was taken in by the Royal Family of the Wolf Clan only to be treated like a slave, working her mercilessly night and day.When her wolf didn't appear, Lily used her only avenue to free herself on the day she became an adult.Finding a mate was the last thing Dimitri De Drago` wanted since his family was hell-bent on killing him, but when he came across a strange female amid a massacred village his dragon stirred for the first time at the sight of her.Turning her away only to find her again caused sparks to fly between the two like they never knew was possible. Facing fatal issues within his Clan, finding his mate came with serious consequences.They knew trouble would follow if they stayed together, but their souls demanded each other risking it all for the chance at happiness.Will their love remain strong through the trials and tribulations they face or will tradition and their families stand in their way of true happiness?