[Original Female Lead x Tom Riddle]
After stumbling upon her colleague, the Dark Lord, conducting a shady deal, Celestina defects and becomes a spy for him.
The bad news: she is bound to a plot-correction System.
The worse news: because the plot keeps straying further off course, the System wants her to return to the past and torment the Dark Lord as a child. She has to extort protection money, cast nasty curses, and humiliate him with Galleons, all to push him toward becoming evil.
Celestina: ? I'm basically asking to get myself killed, right?
So at night, she transmigrates to the past and gives the poor kid hell. By day, she returns to the present and nervously plays the part of a sweet, shy, quiet (??) spy in front of the Dark Lord.
Celestina: "I wouldn't dare, I wouldn't dare, I wouldn't dare!"
Who would have thought he would walk over and lift her chin? "Professor, weren't you pretty bold before?"
A personal take: an ageless, stunning Tom Riddle, and a totally dominant male lead! Enemies-to-lovers! OOC warning!