My Frail Childhood Friend Transformed into the Perfect Devoted Husband

[Alternate ancient setting + career-driven female lead + childhood sweethearts]

A spoiled young lady with off-the-charts fighting skills × a frail, sweet, and versatile young gentleman

Childhood sweethearts, devoted to one another

How far would you go to follow someone with all your heart?

Would you decide from childhood that she was the one, learn everything for her sake, and follow her without hesitation even if it meant risking your life?

She protects the Great Sheng; he protects her.

She protects the capital; he protects her.

One-on-one romance, happy ending. (Every man who has a romantic entanglement with the female lead is a virgin.)

Content warnings:

1. The female lead has dated men other than the male lead and has had emotional entanglements with men other than him.

2. The ending is one-on-one. (The reason is that the author isn't allowed to write a one-to-many ending.)

3. The male lead gets put through the wringer.