Otome Game no Hametsu Flag shika Nai Akuyaku Reijou ni Tensei shiteshimatta...: Zettai Zetsumei! Hametsu Sunzen-hen
What if, when Katarina Claes was reincarnated in the dating sim 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!
(Source: Seven Seas Entertainment)
Note: Includes 2 extra chapters.