Dimensional Aspiration University or D.A.U.

Unlike other schools, this one doesn't accept applications. It searches the multi-verse for candidates that it deems the best in respective fields of study, hobby, talent, and/or description. The board promises to ensure a bright future for any student that graduates. So, when an invitation appears, it's too good an opportunity to pass up.

After all the students arrive, however, things quickly take a turn for the worst. A mono-chromatic creature has taken charge of the facilities. The only way to graduate and get out alive...

... is to kill another student without getting caught.
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Yep, it's a take on Danganronpa, that franchise created by Kazutaka Kodaka. Deaths and violence are practically required. Other properties will get involved too. Avoid if you're squeamish.