After My Fiancé Called Off the Wedding, I Rose to the Top, and Now He's Panicking

[Alternate-history era setting + cheating on the college entrance exam + satisfying revenge, no taking abuse + no pocket dimension + male lead appears late + devoted couple + doting husband + military marriage]

[Resilient, clever country girl VS devoted, lovestruck military officer]

She grew up abused by her biological father and stepmother. The only person who ever loved her, her grandmother, was with her only until she was thirteen.

Starved for affection, she became a lovesick fool and was tricked into agreeing to swap names with her scumbag boyfriend on the college entrance exam!

He got into A University using her score, while she failed to get in!

He coaxed her into getting engaged. She willingly worked herself to the bone for three years at her future in-laws’ home, only to receive his notice that he was breaking off the engagement!

She’d had enough! She swore she’d take everything from him!

Kindhearted and determined, she opened a shop and made money, and unexpectedly found loving adoptive parents!

And an adoptive older brother who fell in love with her at first sight!

She: I thought of you as my big brother, but you want to sleep with me?

He: You say in your sleep that I’m so handsome it makes you drool. Is that how a little sister thinks?

After she knocked her scumbag ex back to his original status, she took the college entrance exam again and finally got into the university of her dreams. Riding the wave of reform and opening up, she threw herself into building a career!

Scumbag ex: I was wrong. Please forgive me. I really do love you.

She: Get lost!