The Villainess and Miss Demon Lord

Two girls, hand-in-hand, cross over to another world, into a magical academy set in a melodramatic Western fantasy novel. They transform into two people completely unrecognizable to each other: One is a rich villainess who is incapable of using any kind of magic, while the other is a young girl extremely talented in the field of magic, who's said to be the reincarnation of the Demon Lord. Originally set to save the world, the two of them unexpectedly fall in love.