Out of Control: My Arranged Marriage Partner Is My Rival's Older Sister

[Both leads are virgins! There is a secondary couple, and the male lead is pure in every way, so come on in without worry!]

Shi Yunzhi never imagined she'd end up engaged to her romantic rival's own brother!!!

Her rival's own brother! Si Jinli, that bad man at the very top! Because she was his sister's rival in love, he was always subtly mean to her, putting her down while maintaining his elegant, aristocratic demeanor.

Whenever the person she liked showed up, he would either casually block her way or quietly steal the opportunity from her, always helping his sister get closer to him. He could barely be bothered to spare Shi Yunzhi a glance. All that mean-spirited insistence on “making sure you don't get your way” was hidden beneath his cool, aloof facade, and aimed entirely at her.

When her family told her she had to marry that wicked man, Si Jinli, she completely fell apart. She was a hundred thousand percent against it!!!

After they married, she was even more fed up, thinking she'd have to deal with his sister as well as the even more infuriating man himself.

He kept playing all sorts of tricks on her, so she kept fighting back. But instead of getting angry, he always had an excited gleam in his eyes! He would drag her somewhere private and “bully” her!!!

…

One night.

In their room…

Shi Yunzhi said to Si Jinli:

“What you're doing... is crossing a serious line with your ‘sister's romantic rival’~”

Si Jinli buried his face in the crook of her neck:

“Looks like Mrs. Si still doesn't understand her own place. You still dare call yourself a ‘rival’? Seems you don't want to get up anymore?”

…