Toaru Majutsu no Index - Volume 10, Epilogue: The Awaiting People after the Conclusion. Those_Who_Hold_Out_a_Hand.

When I became a rich young master, I had to enjoy it.

After falling to my death, I woke up with two bodies?!Reincarnated as both a humble commoner boy and a privileged young noble girl, our protagonist enjoys their new chance in life with two different perspectives. Although they only wished for a peaceful life, the world had other plans in store, presenting them with a few unexpected obstacles along the way.Now, they find themselves confronted with bandits, secret evil organizations, terrifying monsters, and... romance?

Her step-sister just died three months ago. Now, she insists on marrying Chu Lui, who is supposed to be her future brother-in-law, the mind behind the Chu Enterprise. The world is sure that she, the new bride-to-be, had caused her step-sister’s death in order to seduce him.

Even her own mother says to her cruelly, “Don’t call me ‘Mom’. I don’t have a daughter as vicious as you.”

- Description from Novelupdates

Having traveled to the year 1983, Lu Jiaxin found herself at the start facing the failure of the original host in a high school exam, a stepmother who was sweet on the outside but dark-hearted, and a purely self-interested father.Designer Lu, facing a hellish start, decided: if her stepmother made a move, she'd countermove tenfold! If her father failed to act like a human, she'd teach him how to!She still intended to continue college; she heard that the degrees from Hong Kong University in the '80s were quite valuable, so she flung her sleeves and bravely explored the financial and business circles of Hong Kong.Bulky mobile phones, beepers, “007” on the dance floor!Victoria Mountain, Shallow Bay, female tycoons of Victoria!