Anata wa Akumu no Sankasha ni Erabaremashita.

Hint: Please give it your all, as if you are prepared to throw your life away. Once you see this dream, you will never wake up—the curtain rises on a "Nightmare" game that never ends. "The participants for the Nightmare Game have all assembled." Haruto, an ordinary high school student, wakes up t...

Source: MyAnimeList