The Story of My Desk Mate, a Max-Level Powerhouse

The Hero and Heroine Each Lead Their Own Underworld Organization, and the Two Groups Are Mortal Enemies

The male and female leads have tons of secret identities, and they're all incredibly capable. They're both aloof. No transmigration, no being reborn, and no yanderes. I want something like those two books about Sister Ran and Sister Mang. A little angst is fine.

The Female Lead’s Identity Is Revealed Early, She’s a Badass, and the Male Lead Only Dotes on Her

The female lead's secret identity should preferably be something like a God of War. A top student being fought over by prestigious schools would also be fine.

A Rich Female Lead with Tons of Secret Identities, Each One Powerful on the International Stage

Looking for books similar to What a Filial Spectacle! The Crazy Little Girl Is Addicted to Face-Slapping. No doormat heroines, no protagonists with an absurd amount of plot armor, and no characters who bully others while acting like it's all a joke. The romance shouldn't move too fast: the heroine shouldn't start valuing the male lead more than her friends shortly after meeting him. Ideally, not rebirth...

The Ultimate Secret Identity Novel: Both Leads Have Secret Identities, and the Heroine Is the Queen of Disguises