Yan Yan missed a step on the stairs and was forced to bind himself to a villain survival System.
His only mission was to stay alive=
Yan Yan: What if I die in one second...
System: I'll give you one chance to rewind...
World One: You are the carefree Fifth Prince of Qi. While traveling, you find an injured man with amnesia. Taken by his outstanding looks, you lock him up in your residence and subject him to all kinds of humiliation. The capital is soon abuzz with rumors that the Fifth Prince has acquired another stunning male favorite and is living it up every night.
Who knew the man was Xie Lang, the long-lost Third Prince of a neighboring kingdom? Six years later, Xie Lang escapes your residence and invades Qi with an army. Your country falls, your family is destroyed, and you die horribly at his hands.
System: Good news, Host. If you live to thirty, you pass the mission.
Yan Yan: That's easy!
When Xie Lang's sword really came thrusting toward him, Yan Yan wondered what had gone wrong. During those six years, he had been so afraid of losing his life that he never followed the original plot and humiliated Xie Lang. He had practically granted Xie Lang every wish, all in the hope that after unifying the Nine Kingdoms, Xie Lang would spare his life.
Something must have gone wrong somewhere.
The sword didn't kill him, but every night in Xie Lang's chambers was as good as being dead.
On an utterly ordinary day, he collapsed in Xie Lang's arms and never woke up again.
--He chose to follow the original plot and start over.
World Two: A vindictive, greedy fake young master X a refined, accomplished real young master.
World Three: A spoiled, hot-tempered young lord fallen on hard times X the steward's son, who puts up with everything at first and later becomes a business tycoon.
A little melodramatic. Each life comes with one chance to reload, but it may not be used. The smaller worlds may have happy or tragic endings, but the main story has a happy ending.
The protagonist is flighty and extremely vindictive. He falls in love relatively late. The love interest is the same person in every world.
Theme: The importance of treating others kindly.