Seventies setting + era + substitute bride + military marriage + striving + both leads are each other's first
Su Jin was a genius military doctor in the 21st century who had completed countless life-or-death missions.
Yet she died in a car accident.
Her original self's father wanted his child to succeed and secured a place for her at university. But the original self was so blinded by love that she gave it away.
When her father went to argue the matter, someone attacked him from behind, leaving him gravely injured and unconscious. With no other choice, she turned to her birth mother for help.
The mother she'd never met forced her to marry a disabled man.
She refused and threw a fit, so they locked her in a dark room, where she passed out from hunger.
When she woke, Su Jin had transmigrated.
If marrying him was what it took to pay for her father's treatment, then so be it.
Though he was disabled, he lived in a detached house, and the conditions were pretty good.
She wouldn't have to look after him, either, and since he already had a child, she wouldn't need to give birth herself.
Then came an even bigger surprise: Su Jin had transmigrated into a book.
And the disabled man she was supposed to marry was destined to become a great general.
If she wanted to live the life of a general's wife, Su Jin would have to work hard to treat her husband's injuries.
She'd planned to respect him and fulfill her duties.
Who knew her husband would fall for her like a house going up in flames and insist on having a baby with her?
And so Su Jin earned money with one hand, raised a child with the other, and somehow had to make time for romance, too, leveling up and taking down one obstacle after another along the way.
The content is clear and well-organized, making it hard to put down and not falling into the trap of cliché.
What you said is so wonderful and I'm very touched now.