Transmigrated as the Villain's... (Quick Transmigration)

Transmigrating into the role of a villain's fiancee, his white moonlight, his younger sister... 1. The villain's white moonlight To avoid the reputation from her previous life as a “beauty who brought chaos to the realm,” Wen Ruyue chose to enter the palace after being reborn. But she did not know that the emperor, who had been detached and indifferent in her previous life, had a white moonlight in his heart, and that white moonlight was none other than Wen Ruyue. 2. The villain's younger sister Her mother is a transmigrated assassin heroine, her father is an emperor with immense power, and her elder brother is a renowned villainous war god. So even though everyone knows Princess Anping is a sickly beauty, the only son of the prime minister, the young marquis, the crown prince of another kingdom... all still claim to have admired her for ages and that they will marry no one but her in this life. But after all their squabbling, they are astonished to discover that Princess Anping has rejected everyone else's advances and married her sickly cousin, who has always loved her but was too insecure to confess his feelings. *Each is a standalone story, but they are connected. Most take place in ancient or fantasy settings. Theme: No matter who you become, what matters is having a clear conscience