[Steady, taciturn policewoman Tang Anlan x the Yun family's beloved eldest son, the white moonlight / the second son, a red rose; brothers-and-substitute romance]
On the night the imperial capital descended into chaos, the Yun family's second son, Yun Zhihuan, was making trouble at the lantern festival and nearly got caught red-handed by Tang Anlan, a Spirit Warden on patrol.
At the last moment, Yun Zhihuan drew a beauty mark under his eye and disguised himself as his virtuous and widely admired twin brother, Yun Chuxiu, successfully escaping trouble.
He saw that Tang Anlan had a soft spot for Yun Chuxiu, so he repeatedly impersonated him and enjoyed all the benefits.
At the same time, he found it increasingly hard to bear that, when they were intimate, Tang Anlan gazed at him with deep affection while calling him by his brother's name.
Finally, as the two were about to marry, everyone was singing the praises of Tang Anlan and Yun Chuxiu. Unable to take it anymore, Yun Zhihuan barged into the Tang residence, grabbed the startled Tang Anlan, and kissed her through his tears. "Look carefully. It's always been me standing before you! I'm the one you love!"
-
From the heroine's perspective:
Tang Anlan had long since decided to dedicate her life to her country, but then the love of her life appeared out of nowhere. Her beloved was wonderful in every way, gentle and virtuous, considerate and attentive. The only problem was that he had a poor memory. He'd forget things they'd done together, and often got jealous of himself.
It wasn't until the night before their marriage was decreed that she realized the truth.
The beloved who was proper and reserved by day, but bold and uninhibited by night, was actually two different people.
*A steady, decisive, occasionally robotic retired officer heroine x a gentle, aloof, untouchable eldest son (actually a male ghost) / a rebellious, stubborn, chivalrous second son (actually a devoted puppy)
*Slightly adored by many (some have unrequited feelings for her)
*The men suffer, not the woman. The heroine doesn't have to grovel for forgiveness, either.
*Ancient-style cyberpunk, or more accurately, cultivation punk. The setting is pretty outlandish, and the historical background is vague. It's not a matriarchy, but a world with a degree of gender equality.
Theme: The world may change, but this heart remains true.