Madeline belongs to the Villainess Guild where she works as a temporary staff member. Her job is to reincarnate into novels or manga in order to liven up the story. For a total of 93 times, her occupation was villainess.
With her 94th reincarnation, her goal was to be promoted to a permanent staff member.
However, there already was a curly-haired villainess like her in the next place she was going to reincarnate to. By accident, Madeline was reincarnated as the heroine.
"With my pride as the guild's ace on the line, I'll show everyone a worthy performance!" (Souce: Mangaupdates)
