Lesson Overviews/Nightbringer

 WARNING ! This page contains  MAJOR SPOILERS . Read at your own risk.

Story Intro
MC gets a text on their D.D.D from an unregistered number. The number texting MC avoids answering any questions that MC asks about their identity, and claims that they are very well acquainted with MC. The unknown number then claims to know everything about the past, present, and future before changing the subject to ask if MC recognizes the demons in the photo they send (a photo of the demon brothers). If MC answer "Nope." the unknown number will assume that something must have gone wrong, and tells MC not worry because they will understand everything soon. Otherwise, if MC answers "Yes, I know them. Really well, actually." the person will say "That makes this much easier." Both choices eventually lead to the unknown number saying that they're about to take MC to a place that will make them happy and give them more joy than anywhere else. The person then wonders if MC will end up in their own past, or the past, present, or even future of some stranger. The last text from the number says "But never fear, for wherever you go, "they" will be there waiting for you." Before giving MC well wishes on their journey.

Lesson 1
MC wakes up inside the student council room of RAD, surrounded by Diavolo, Mammon, Belphegor, Asmodeus, Beelzebub, Leviathan, and Lucifer, who are all in demon form. Diavolo tells MC he's happy they're okay and that they were starting to worry. Mammon, right off the bat, demands money from MC for "saving their life", while the others wonder how someone could have gotten lost and ended up inside RAD. Everyone also assumes MC is a demon. While they interrogate MC, MC learns from Lucifer and Diavolo's conversation that RAD is apparently still under construction. Diavolo then asks if MC is even from here, since he finds it shocking that there's a demon he hasn't met in the Devildom. MC can either ask if they all have amnesia or just say that something definitely isn't right here; either way, Diavolo will just assume that MC must be confused and will ask them to calm down. Afterwards, he will introduce himself as Diavolo, the next king of the Devildom, before he starts introducing the brothers. Just as he finishes the introductions, MC gets a text on their D.D.D. from Solomon, who asks where MC is and if he can call them. In the call, he apologies saying "something came up" because of a spell that might go off soon and says he probably won't get reception while jumping through space time, before hanging up.

After the call, Diavolo starts to wrap up introductions by telling MC about how there's another brother but gets cut off by a furious Satan yelling in anger while searching for his brothers. Everyone is exasperated about how Satan is having another one of his "moods". Now, he's on a rampage right after having broken out of the chains his brothers placed him in due to his last frenzy, so he's all the more outraged at his brothers. Diavolo wraps it up by introducing Satan as the avatar of wrath (who is doing a marvelous job of owning up to it). Satan storms into the room fuming and starts destroying everything around him trying to find the brothers. Before anyone has to fight for their life, they all rush to hide before Satan can find them. Now, MC can ask them when the Celestial War happened, or if they're in the past. If MC asks about the war, Lucifer seems confused and says that it only just ended. But, if MC asks if this is the past, Mammon just asks if they took a hit to the head recently. Diavolo cuts in to ask MC's name right before Satan finds everyone all huddled up and whispering to each other. MC tries using their pact to order Satan to "STAY", but it doesn't work. The others wonder what that was supposed to do, and if it was a failed attempt at magic while Satan closes in on them. Suddenly, Ruri-chan voice lines play from MC's D.D.D, virtually stunning everybody.

Levi bursts out of his shell to ask all about Rui Hana and challenges MC to play Rui Tunes every day while he checks in on their progress. However, Lucifer quickly shuts down Levis rant because they're still under fire from Satan. Suddenly, MC feels a warm light building inside and is successfully able to stop Satan from attacking anyone, unintentionally throwing the rest of the brothers onto the floor in the process (much to everyone's shock). Diavolo determines that meeting MC must be fate, and explains that the brothers were originally high-ranking angels that were exiled from the Celestial Realm after the Great Celestial War, so they are new to the Devildom and their arrival is stirring up all kinds of rumors, so he figures MC should be the brothers attendant until they get used to life in the Devildom. None of the brothers like the idea of having a babysitter at all, especially one that was able to subdue them so quickly. Lucifer tries to talk Diavolo out of it but ultimately loses the argument, since Diavolo is the future king of the Devildom. MC also gets stuck agreeing to the proposition for the same reason as Lucifer.

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