My Next Life as a Villainess Side Story: On the Verge of Doom! (Manga) Vol. 1

A high school girl is stunned to find herself reincarnated as the conniving villainess from her favorite dating sim game...but something's off! What if, when Katarina Claes was reincarnated into Fortune Lover from the original series, she didn't regain the memories of her past life until she was fifteen? With less than a year to go before her destruction, Katarina must find a way to avoid all possible bad endings!