“SLEEPLESS” and its sequel “SLEEPLESS Nocturne,” undoubtedly the best projects by the group Empress, will finally be adapted into animation! Tomoki Kawai and Yukino Komori are a couple of university students who have just started a relationship. On an unfamiliar date, their car breaks down, and they have to head to a mansion they spotted along the way for help. “The House of the Black Rose,” a Western-style mansion hidden deep in the mountains. Little do they know that they will become prey to a strange party there…