I Just Became a Pink-Haired Little Girl, and My Nemesis Is Making Me Call Her Big Sis

[Gender-bender] What's the strongest man's greatest fear? I used to think it was going bankrupt. Now I know it's turning into a little girl and falling into the hands of your nemesis. I, Lin Bai, am the capital's number-one young scoundrel. She, Su Wanqiu, is an icy heiress. We've been at each other's throats for eighteen years, and we've never stopped wanting to kill each other. Then I turned into a pink-haired girl, barely 145 centimeters tall, and she locked me in a presidential suite. I thought torture awaited me, but instead... She slapped a “Pet Care Agreement” in my face. “Won't sign? Then tomorrow, the whole capital will get a photo book of you in a maid outfit.” I tried to fight back, grinding my teeth and plotting to put her in a sack and beat her up. But the next second, my stomach growled, and a piece of wagyu steak tricked me into calling her “Big Sister.” From then on, being domineering was out of the question, and my dignity lay in pieces. But then I uncovered a shocking secret... This cold, chaste-looking nemesis actually has a whole wardrobe full of kinky JK uniforms and cute little dresses! And the way she looks at me is definitely not how you'd look at an enemy! “Lin Bai, do you think you know how you ended up like this?” She leaned close and whispered in my ear. Wait, my body... Could she have planned all of this herself?!