[Bride substitution, love after marriage, and a heroine who builds her career]
A nurse worked to the point of collapsing on the job and wakes up as a doomed minor character. From the start, she's forced into a substitute marriage and marked for death.
Luckily, she came prepared and knocks out the notoriously violent Prince Rong.
Wait, wasn't he disabled? He can clearly stand!
After she knocks him down, he turns out to be much more obedient.
Everyone says the Princess Consort of Rong knows how to keep her husband in line, and that's why the prince's temperament changed so much.
What? Your legitimate older sister regrets it and wants to take your place? I'll expose your entire background, down to your underwear!
When their one-year agreement ends, she's running several little shops and living a flourishing life!
