Only After Breaking Off the Engagement Did I Learn I Was an Immortal Emperor Reincarnated?

Lin Susu is the illegitimate daughter of the Lin family. When her older sister, Lin Wan'er, refuses to marry Mu Xuan, the Chen family’s adopted son, who is known as a good-for-nothing, Lin Susu has no choice but to take her sister’s place.

The moment Mu Xuan cultivates Lin Susu into an empress, Lin Wan'er regrets her decision.