Kuro Zudosasupensuhebun (Shincho Bunko Ko 77-1 Nex)

[Machine Translation] I'm pretty sure they killed me. And yet, where am I? I found myself on a resort beach and in a Western-style mansion. According to the mysterious newspaper that arrives every morning from an invisible delivery man, six people who were slaughtered in this world have returned to this heavenly mansion with no memory of their deaths. Who am I? Why and who killed me? We want to know the truth. This is a "they are all already dead" mystery that breathes new life into the closed circle of the mansion.

俺は、間違いなく殺された。なのに、ここはどこだ?気がついたら目の前にはリゾートビーチと西洋館。姿の見えない配達人から毎朝届く不思議な新聞によると、現世で惨殺された6人が、記憶を無くした状態で、この天国屋敷に返り咲いたらしい。俺は誰だ?なぜ、誰に殺された!?俺たちは真相を知りたい―。館ものクローズドサークルに新風を吹き込む「全員もう死んでる」ミステリ。