Mirai no Kuromakukei Akuyaku Reijou Moriarty no Isekai Kanzen Hanzai Hakusho  

未来の黒幕系悪役令嬢モリアーティーの異世界完全犯罪白書, Moriarty's Perfect Crime

James Moriarty was a notorious criminal who met his end after a confrontation with a renowned detective at a waterfall. He was taken over by a beautiful young woman from another realm who showed him the corrupt treatment of noble daughters. Despite not remembering anything, his intellect remained unchanged. He utilized his sharp mind and his masterful crime formula for the sake of just one girl in a world devoid of a great detective. Tragically, the young lady succumbed to her injuries and was resurrected as Moriarty, a ruthless villainess bereft of emotion.