After My Marriage by Proxy, I Became the Tycoon’s Most Cherished One

To pay for her mother's medical treatment, she takes her younger sister's place in an arranged marriage. After they wed, he cherishes her deeply and helps her grow stronger, but his tenderness leaves her feeling insecure. “If you hold a seashell close to your ear, you can hear the ocean. You told me that when we were children.” It turns out their fate was sealed when they were young…