Great Demon Sun Wukong - Chapter 26 - 21 Hope

As a boss with space plant abilities in the apocalypse, Lu Yao once traveled to the future, became the director of a nursery school that was about to close down, and became a rare animal human on the verge of extinction.
The food she made at random can cure the genetic disease of the cubs in the welfare home. She punched the cubs’ scum fathers and scum mothers, and kicked the remarried families who abandoned the cubs.
It is such a good kindergarten successor dean, who is attracted by that single cool imperial marshal!
Since then, the barrage in the live broadcast room has become:
Imperial Citizen A: Dean A, I really want to marry.
A certain big black dragon: Shut up! This is your marshal’s wife!
CP: Dean Lu Yao, who is extremely protective of short-sightedness and loves cubs, X the imperial marshal Helanjia who loves Shang Yunxi more than cubs
Brief: There are no bad cubs, only bad big ones.

- Description from novelbuddy

The empire had called him a villain, now they raise him as their heir.Once feared as the most powerful being alive, the so-called “Villain of Chaos” was brought down by the very heroes who craved his artifact. Now, he’s been reborn into the very home that had killed him in the name of cleansing the world. In a royal court ruled by lies and power games, he is no longer the demon to be feared… yet. His mother concealed his identity on the day he was born, and a river of blood flowed for his sakeNow he will learn how to pull the strings in court as its prince, and train to ascend the throne and become the most powerful mage the empire has ever seen.The world thinks it killed him. It only gave him a reason to return.

«Until death do us part.»That was our vow.And she kept it... by driving her sword through my chest.I was a hero. A symbol. The one chosen by the gods to free humanity.I fought for her. For us.But in the end, it wasn’t the demons who killed me.It was the woman I loved.Helena betrayed me.I fell with my heart shattered and my blood burning between my fingers.But death wasn’t the end.I woke up in another body, in another world...No, not exactly.I woke up inside the very story she wrote.And now, I am Daven von Riesenhart:the bastard son of a marquess, a noble outcast with a name no one respects, and a life I never asked for.I no longer believe in ideals, in gods, or in happy endings.I won’t fight for others.I won’t die for anyone.This time, I’ll live only for myself.And if surviving means deceiving, betraying, or destroying...so be it.Even if it makes me the villain of this story.

Knowing she married a wrong guy, what would she do to deal with the subsequent marriage lives?

In order to pay for her brother’s medical expenses, she had to replace her own sister to marry the rich family's elder son . She always thought she was married to the elder one, but she did not know her husband was nominally the younger son He Yi Ning.

He Yi Ning, the real heir of the rich family, the ruthless business emperor, the ruthless workplace tyrant, and her sister’s dreaming husband. When she found out that the person who married her was He Yi Ning, she stunned and asked, “Shouldn’t i be your sister-in-law?” He smiled charmingly: “Are you unhappy with your husband?”