The Demon Slayer Exchange Student

Royal Academy of Diavolo

Y/n: Where am I...? What is this smell? It smells like how Gramps described a demon smell, but stronger than Gramps described. 

Y/n is in a place that looks like a courtroom. Several men are looking her way. The man in the seat of the chief judge starts speaking. 

???: "Welcome to the Devildom, Y/n... Oh, pardon, me. Feeling a bit shocked, are we?" 

Y/n: "No. It's..." Should I headbutt him? Where is my sword? Oh. It's still on my back. 

???: "Well, that's understandable. You've only just, arrived, after all. As a human, it will probably take a little while for you to adjust to things here in the Devildom."

Y/n: "I...Is this a dream..?" Please be a dream. 

???: "Hmmm... What a very human thing to say. Outstanding. I have a feeling you might be just the sort of person we're looking for. I suppose I should start by introducing myself. My name is Diavolo. I am the ruler of all demons, and all here know of me. And someday soon, I will be crowned king of the Devildom." 

A flash and the Devildom is seen. 

Diavolo: "This is the Royal Acadamy of Diavolo though we just call it RAD. We look back inside. 

Y/n: I guess I'll just get used to this stench. 

Diavolo: "You're standing inside the assembly hall, the very heart of RAD. This is where we officers of the student council hold our meetings and conduct our business. I'm the president of said council." 

Y/n: "Why am I here?" 

Another voice is heard. 

???: "I will explain everything to you." 

Diavolo: "Y/n, this is Lucifer. He is a demon and the Avatar of Pride. He's also the president of the student council and my right-hand man... and not just the title, I assure you. Beyond that, he's also my most trusted friend." 

Lucifer: "Flattery will get you nowhere, Diavolo. Speaking on behalf of the entire student body at this great and stories school of ours. I offer you a most heartfelt welcome, Y/n." 

Y/n: "On behalf of the students?" 

Lucifer: "Diavolo believes that we demons should start strengthening our relationship with both the human world and the Celestial Realm. We've sent two of our students to the human world and two to the Celestial World. And we're welcoming four students to our school: two from your world and two from the Celestial Realm. So, I take it you've probably put two and two together at this point, right? You've been chosen from among the people of the human world to participate in this program of ours. You are our newest exchange student. Your period of stay is one year. You will have to work on the tasks that you will receive from RAD. After one year, you will write a paper about your exchange here in the Devildom."

Y/n: "Write a paper?!" 

Lucifer: "I am not telling you to write a doctoral thesis. You can take it easy. Don't look at me like that. It's not like I will abandon you all by yourself here in the Devildom. You need someone to look after you, [Y/n: No, but thank you.] and I think that someone should be my brother Mammon. He's the Avatar of Greed and... how should I put it...? Oh well, you'll understand soon enough." 

Lucifer hands Y/n a D.D.D. 

Lucifer: "Here, take this device. It's called a D.D.D. It's a lot like the cell phones of your world. This will be yours to use for as long as you're here." 

Y/n: "Thank you!" 

Lucifer: "Now, go ahead and try calling Mammon with it."

~Call~

Mammon: "Yoooo."

Y/n: "Hello."

Mammon: "Huh? Who the hell are ya? You ain't Lucifer." 

Y/n: "I'm a human."

Mammon: "Whaaa? A human? Geez, I was gettin' all chilly here thinkin' it was Lucifer again. Ya should've told me right away. So, what business does a human got with THE Mammon?"

Y/n: "You will be in charge of me from now on."

Mammon: "No way! There's nothin' in it for me. Whaddya even mean by "be in charge of you?" AAH! I get it now, you're the other human--the new exchange student! G'luck with that, and see ya."

Y/n: "Thanks. Oh! Also, Lucifer called for you."

Mammon: "Pfft, whatever. Ya think THE Mammon would listen to ya just 'cause you're tryin' to scare me with that name?"

Y/n: *Barley above a whisper* "I'm sorry."

Lucifer: "You've got ten seconds. Nine. Eight."

Mammon: "YESSIR!"