Reborn As A Lucky Girl

After her heart was dug out, she was reborn as a newborn baby.
Not only did the baby have the characteristics of a koi fish, but it was also betrothed to a child.
Her second mother, who had plotted against her, had mysteriously fallen into great misfortune.
The days of the aunties and grandmothers who doted on her were getting more and more fiery.
Thus, Xue Xue'er was able to grow up to twenty years old in a group environment.
One day, a handsome rich second generation told her, "Actually, I'm the one you assigned to me."
Xue Xue Xue'er: Is there such a benefit from being a koi fish?