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One day, Mai remembers that her perfect stepbrother is a character in a death game manga, and that o...
5/5
Although I wouldn't call this a romance per say, but it falls under the Yandere category so why not. So our FL remembers from a past life that her step-brother is the mastermind in the death game and he kills her, so as she tries to prevent her untimely fate. The dynamics between the two siblings changes.