Pet shop owner male lead x cultured white-collar woman
She transmigrates into a book as the older sister of a sickly female protagonist who shares her name, a cannon-fodder character loved by neither her father nor her mother. She didn't get a good education in her previous life, but now she has the means, and she's still young, so she resolves to study hard. In the end, she succeeds in her studies, finds love and friendship, and reaches the pinnacle of life.
Before meeting him, marriage and love seemed like things she could take or leave. After meeting him, she learned that someone could love her this much. Meeting you was the greatest luck of my life.
The original female lead won't be vilified. May every girl be treated kindly and find happiness.
Theme: Every girl deserves kindness, the freedom to love boldly and live freely.