"Dies irae" (Ecclesiastical Latin: [ˈdi.es ˈi.re]; "the Day of Wrath") is a Latin chant first written by either Thomas of Celano of the Franciscans (1200–c.1265) or Latino Malabranca Orsini (d. 1294), lector at the Dominican studium at Santa Sabina, in Rome.

simple.wikipedia.org/wiki/Dies_irae

Here's a fact:
The Great Wall of China is not actually one continuous wall, but a series of fortifications built over centuries. The Great Wall was primarily built to protect the Chinese Empire from invasions by nomadic tribes from the north.

Hope's Peak Academy (希望ヶ峰学園 Kibōgamine Gakuen), also known as Hope's Peak High School, was a school located in the center of a large city. The school was the location of the School Life game as well as a primary location throughout the entire saga.

danganronpa.fandom.com/wiki/Hope%27...

"Corvus oculum corvi non eruit", meaning "a crow will not pull out the eye of another crow." It’s essentially the same as "honor amongst thieves," and refers to complete solidarity amongst a group of like-minded people regardless of the consequences or condemnation.