Synopsis: Migawari Akuyaku Reijou, Tensei Saki de Yami no Maou ni Hoshigarareteimasu

am being targeted by the devil in a place where I was reincarnated as a villainess / Migawari Akuyaku Reijou, Tensei Saki de Yami no Maou ni Hoshigararete imasu / Reincarnated Into A Game World Where The Demon King Who Kidnapped Me Wants To Do Me All Night Long / 身代わり悪役令嬢、転生先で闇の魔王に欲しがられています / 악역 영애로 환생한 곳에서 마왕에게 노려지고 있습니다 Once a corporate slave, she collapses from fatigue one night and is reincarnated into her favorite AO―rated dating game... Instead of being the heroine Leah, though, she ends up becoming her evil older sister Letitia! The game progresses and it looks like Leah is going to get kidnapped by the Demon King, Clovis. Letitia realizes that in order to stop the world from ending, she needs to step up, take her place, and somehow convince Clovis not to go to war. She thinks things will all go according to plan, until she discovers that Clovis was intent on doing all sorts of hot and naughty things with Leah in bed... which he's now doing to Letitia, of course. Hopefully, Letitia's sacrifice will pay off in the end and she'll finally be able to live the peaceful life she's always dreamed of!