Possessive love + powerful family + mutually devoted + one-on-one
Lu Qi was born the young master of the wealthy Lu family and was engaged to Shen Yihan, heir to one of the most powerful families around. But his cruel stepmother switched their identities, turning him into an illegitimate son who was not loved by the Lu family.
At six, Lu Qi moved into the Shen family home with his nominal "older brother." At fourteen, he suddenly disappeared from the Shen household.
Ten years later, his adoptive father fell seriously ill, and Lu Qi had no choice but to return to the Capital Star with him. To avoid attracting Shen Yihan's attention, Lu Qi used a special method to disguise himself as an alpha.
He thought this would let him avoid Shen Yihan, but an accident exposed his identity completely. Lu Qi fled in the middle of the night, only to be stopped on the way.
Shen Yihan blocked Lu Qi inside the cramped car and ground out through clenched teeth, "My dear fiance, where are you planning to run off to this time?"
The heavy scent of pheromones filled the cramped car. Lu Qi clamped a hand over the back of his neck as overwhelming panic spread through him.