Classroom 4-C

"My mother actually believed sticking a bunch of horny, angry, blood thirsty supernatural creatures in the same classroom would be a good idea...this just shows that even geniuses have moments of stupidity"

- Sonia Sitri describing the situation of Classroom 4-C

Classroom 4-C (教室 4-C; Kyōshitsu 4-C) is one of the major settings of DxD: Black Lamb being the classroom the protagonist Yami Himura is transferred to after being reincarnated as Aurora Lucifer's servant. The classroom is believed to be a class for students who are extremely smart or children of powerful and rich nobles but when Yami is transferred to the class he realizes the classroom is actually full of arrogant, violent, vicious, powerful, and even sex crazed and blood thirsty creatures. This class was started by Sona Sitri at her new school Shitori Academy with the intent of helping students grow and learn in a human-like environment in order to learn how to fit into human society while bettering themselves but Yami has dubbed the classroom a major failure because all the students still possess negative traits that you would expect from spoiled noble children.

The class representative for the class is also the student council president: Roxanne Phenex. Despite the other students believing the class to be the perfect students, it is actually revealed that 75% of all student damages comes from this classroom only. Four out of the thirty-eight students are said to be High Class Devils with their own evil pieces, however Aurora Lucifer is the only one of the devils revealed to not be a Pure blooded devil (due to her human/nekomata ancestry).

History
Not much of the classroom's history is known by the normal humans of Shitori Academy other than the fact that the class is supposed to host bright and intelligent students or students of noble families, while this is true the initial reason for starting the classroom was to help teach the supernatural creatures how to integrate into the human world while also keeping up with their studies.

Summary
The students of the classroom are shown to be insanely arrogant, violent, and powerful. Despite their massive amount of potential Sonia says that because of their naturally violent nature she has to frequently call Ex Gremory IV to come to the classroom in order to set the students straight. She says she has little to no control over the class because they account for 75% of the damages of the classroom. The only student who breaks this violent and angry trend is Hope, the only angel of the classroom who is shown to be kind, sweet, quiet, and polite although she is shown to have a lustful side causing her wings to flicker black every-time she thinks sexual thoughts. A common trope is that Eden, a known and proud perverted fallen angel boy who fell at the age of 13 due to his lust repeatedly tries to get her to fall by telling her to submit to her lustful desires which causes Aurora to punch him on the head, which causes Roxanne to insult Aurora which leads to a classroom fight. Yami is shown to view all the students as assholes, refusing to associate with any of them and only associating with Aurora because she is his master. This later changes as the story progresses because Yami is forced into a bunch of humiliating and comical situations with the other students of the classroom.
 * Sometimes Sonia is able to get the classroom under control by simply threatening to call Ex Gremory IV because the students are afraid of his sadistic side, but other times when they are too wrapped up in fight they forget their fear of Ex Gremory IV in the middle of the battle thus causing Sonia to call him.
 * The teacher, Shizuka Yuuto, the queen of Sonia Sitri, decides to arm all the students with human assault rifles and machine guns because she figures that allowing them to use human weapons instead of letting them fight with their supernatural powers would lower the casualties and school property destruction that befalls the room.

Staff

 * Shizuka Yuuto (main teacher/art club adviser)
 * Ex Gremory IV ("unofficial" substitute)
 * Theodore Rasalgethi (P.E. teacher/martial art club teacher adviser)

Students

 * Yami Himura (reincarnated devil w/sacred gear) - second year
 * Aurora Lucifer (High Class Devil w/human ancestry) - second year
 * Roxanne Phenex (Pure blood High Class devil) - second year
 * Hope (angel) - second year
 * Eden (fallen angel) - second year
 * Carrie Carmilla (pure blooded vampire) - second year
 * Analise Fella (former nun, current succumbs)
 * More to be announced

Trivia

 * It is revealed that because of the stress of having to run a classroom of blood thirsty supernatural creatures, Shizuka Yuuto frequently has to see a psychologist and became the adviser for the art club only to reduce her stress
 * Theodore Rasalgethi encourages the students behavior because he thinks it will help him grow,
 * Eden is frequently caught peeping on girls and to Yami's annoyance he sells up-skirt pictures of girls around school
 * Eden is supposed to be based off a baka and test character.
 * A succumbs named Analise is supposed to be ironic.