After the Mary Sue Became the Villainess

Blurb 1

The richest man, Huo Chuan, finally married his infamous illegitimate fiancée, to whom he had been betrothed before birth.

The first day of their marriage:

Huo Chuan: What does it feel like to be married to me?

Fiancée (sighing wistfully): I suppose you have to follow your husband, for better or worse.

Huo Chuan: ?

Huo Chuan: Your aunt, the bank president, and your uncle, the real estate tycoon, are coming to visit you.

Fiancée: Everyone has a few poor relatives. You'd better not look down on them!

Huo Chuan: ?

Her wealthy biological father showed up: Sweetheart, it was all Daddy's fault. You've suffered for so many years. From now on, I'll make sure you live a hundred times better than before!

Fiancée: It wasn't that bad. I didn't really suffer. My father used to be the richest man in the world, my mother was the queen of the Kingdom of Yahot, and I was born a princess. A thousand bodyguards escorted me whenever I went out, and everyone who saw me had to kneel, bow their heads, and shout, "Long live the princess!"

Wealthy biological father Σ(?д?lll): Sorry to bother you.

Blurb 2

After waking up, the real Mary Sue, with her five-hundred-meter-wide bed and rainbow hair, discovered that she had transmigrated into the body of a vicious, universally loathed illegitimate daughter of a wealthy family, with a poor fiancé whose monthly income was less than 10,000,000,000,000.

The System responsible for her reversal also told her that she could return to her original body only by turning the tables, face-slapping people, and earning enough points.

How could a kindhearted Mary Sue possibly do something as unkind as face-slapping people?!

So she had no choice but to get directly admitted to the country's top university, then tell her deskmate, who had reported her for cheating on the top exam, that she wouldn't compete with her for the extra points awarded on the college entrance exam.

She parachuted into the judges' panel at a cello competition, took the cello master admired by her senior sister as her apprentice, then had her apprentice give the senior sister, who had insulted her as a homewrecker, some on-the-spot pointers, helping her take first place.

She invited the relatives who looked down on her to visit the castle her poor husband had bought for her, and asked them not to look down on him just because he was poor.

Mary Sue: I'm such a good, kindhearted Mary Sue. I'm so moved by myself, I'm about to cry~

Reversal Face-Slapping System: B-Boss, you've earned enough reversal and face-slapping points to go back, come back, and go back again!

Mary Sue: ?

Theme: People should be kind