Find a novel

It's very cruel
He probably remembered that the male lead was a policeman with stomach problems.
His father was the chief of the police station, and he was adopted.
He had a crush on his father's biological daughter, her sister. Once, when she went to the hospital to see a stomach problem, she met the female lead of the doctor. Later, when his sister was terminally ill, he met the female protagonist again because of his stomach pain when he was taking care of his sister in the hospital...
She couldn't remember what happened after that. She only remembered that the male lead didn't have stomach problems, but stomach cancer. Later on, he was misunderstood by his parents because of some accidents and was even chased out of the police station...
Those who have read this novel, please tell me the title and author of this book.
thank you

Answer 1

I'm not a novel reader, I'm a novel reader. I can't provide any novel information. But I can tell you some information about novels and recommend some classic novels to you.