An older woman and younger man romance, not an incest story. The male lead is the younger brother of the female lead's fiance.
The female lead, Ling Ge, is a general who has fought on the battlefield. She is aloof and indifferent.
The male lead, Shen Zhiyu, is the second son of a marquis's family, where he is unwanted.
For years, he watched her. He watched her get engaged to his elder brother, watched his brother go to great lengths to please her, watched her smile at his brother, and watched her, despite never doing needlework expected of a young lady, embroider a handkerchief for his brother, only for him to toss it aside carelessly.
He wrote letters to her at the frontier every day, but never received a reply.
Thankfully, she was coming back.
Shen Zhiyu had planned everything. Once she returned to the capital, she would break off the engagement, and he would cling to her.
He could act obedient and play the helpless one. He would do anything, as long as she belonged to him.
The pace is a bit slow!
So far so good