Jishou Akuyaku Reijou na Konyakusha no Kansatsu Kiroku.

Prince Cecil is such a gifted genius that almost everything in life has become boring—until his fiancée Bertia meets him for the first time and cheerfully explains that she remembers a previous life, their world resembles an otome game, and she is the “villainess” destined to interfere with his romance with the heroine.

Bertia takes that role very seriously, yet every attempt to behave wickedly somehow helps people and makes them like her more. Watching her fail at villainy becomes the first genuinely entertaining thing in Cecil’s life, then something much more personal. If his supposed villainess already occupies all his attention, he begins to wonder why he would ever need the heroine Bertia insists he is meant to love.