The Prince's Promise: A Modern Assassin in Ancient Times

Top-tier assassin heroine versus top-tier scheming sickly prince. Yun Jinchu, a legendary killer from the 22nd century, accidentally travels back in time and wakes up sharing a drug-induced haze with the rumored sickly Crown Prince of Zhenan. She strips away his disguise, revealing that the prince, known for being frail and barely able to walk, is actually ruthless and capable of wiping out entire families. Forced into an entanglement, they become involved in court conspiracies. Using her strength and cunning, she slaps down the villains, only to realize the prince is the key. After seeking reconciliation, she is caught by this scheming man who declares, 'I will marry you!'