Danganronpa Absolute Vindication

Mearu, The Ultimate Journalist who goes by a pseudonym, suddenly awakes in an empty classroom amongst 14 other Ultimate Students, unsure how she got there. After some investigation, they're all met with an android known as Monorakun, who explains to them that they'll live in that school until the rest of their lives, unless they choose to murder a fellow classmate and get away with it.