Lin Nian transmigrates into a book and only wants to make money. Her "little brother" clings to her leg. "Sis, stop working for money. Just tell me how much you need, and I'll give it to you."
Lin Nian thinks it's too little. Her "little brother" says, "A few hundred million isn't enough? Then wait, Sis. I'll go earn some more."
On the surface, the "little brother" acts cute and needy, but in reality he's a fierce, domineering CEO who wants to get into his sister's pants and make her fall in love with him. He'll even pretend to be an adorable little brother.
All-capable older sister × scheming "little brother"