An Atypical Villain [Quick Transmigration]

[The reader's guide is below the blurb!] [An unpredictable, unhinged top x a sharp-tongued, villainous, straight bottom] 1. The Kingdom of the Gods Spy posing as a saint vs. the real saint [You're a spy sent by a neighboring kingdom. Your mission is to impersonate the saint and assassinate the king.] "What are you hoping for?" "?" "I'm not interested in someone as old as you." "???" 2. The Living Dead S-Class experimental subject vs. captain of the investigation team [Turns out I'm the protagonist's first love.] "You turned me into this. You're responsible for me." "I can't be the only one stuck in the past." "I want you to look at me." 3. The Blood Clan Progenitor of the blood clan vs. a human turned into a member of the blood clan [Unhinged, yearning for love that can never be returned...] "You look a lot like him, but you're not him. He would never treat me this well." "So go die." His heart is twisted... 4. Snake Gu Snake demon skilled in crafting gu vs. foolish young master [The most twisted of the twisted] "We meet again." 5. The Book of Chronos Beast in fine clothing vs. child of the royal family [PS: There is a side couple; there is noncon. Both leads are sexually inexperienced, one-on-one, and the top is always the same person. Apart from worlds three and four, the other worlds have no original bodies. The bottom is still the bottom, and the bonus story for world two features the same couple.] Theme: Keep moving forward, even when trapped in hardship.