Alvin asked "how dare you hit m-" before he could finish what is he about to say Rosario hit him in the face. Rosario said, "assholes like you deserve to experience hell." Alvin said "don't fuck with me! Stay out of my way you bitch!" Rory charges toward Alvin and gives him a powerful punch that got him thrown away. Rory said, "disrespect my master more, I'll bring your body and soul to hell." Rosario said, "that's enough Rory, I'll handle this asshole." Rory said, "as you wish master."
Rosario said, "stand up, let's have a duel." Alvin said, "oh, you are challenging the strongest mage of Rembrandt Academy, do you have a death wish?" One of the girls "you don't have to do this. Just leave us here." The other one said "we don't know you. You're not Rossian so you don't have any reason to help us. Rosario ignored them and said "come and prove to me that you're a lot stronger than me." Rosario use her hands to provoke him and said "give me your strongest attack." Alvin said "don't blame me if you die!" Rosario nods, Alvin used skill and said "die! Nuclear strike!" Alvin produced a beam of light and directly hit Rosario. Rosario didn't react at all and just yawned as she got bored.
Alvin said "wow, you're are a show-off. You're not even reacting at all." Alvin said to himself "moreover, her servants are not worried at all. Do they have so much faith in their master?" Alvin noticed that his body is heating up. He checks around his body and he saw that his clothes starts to burn and the fire spread throughout his body the moment he saw it. He screams in pain while being anxious about how he ended in fire. Rosario said, "I see, so my reflection magic takes some time to kick in." The fire went out of his body and he asked "what do you mean?" Rosario said "my body has a natural ability to reflect any damage that came from my opponent. It's not as strong as my attacker's attacks though." Rosario said to herself "it was just a lie though. It's much stronger for someone who cannot resist and for someone who can resist, its strength will be lessened to the extent where he can only resist. Judging by what happened to him it took some time for it to have an effect. The strangest part of it is that the clothes burn first instead of his body. Is there some kind of special thing with that cloth?"
Rosario asked "Athena, did you appraise Alvin's clothes?" Athena answered, "yes master, it can resist pain, magic, and physical attack." Rosario said "I see, so that explains what happened. Well, it's already over. There's nothing I can do." Rosario said "Alvin, tell us why did you do all of this? If you tell me the truth I will spare your life." Alvin said "my niece, Julius asked me to make Glen's life miserable. At first, I don't want to do it but the whole S class seems to have noticed that my family wants to eliminate Glen and they used that as an opportunity to eliminate the whole F class. They gave us a tempting reward of treasure to eliminate Glen and the whole F class." After what Alvin said the 9 remaining students cried and got angry about what happened.
Alvin asked, "are you going to spare my life?" Rosario said, "yeah, I will spare your life but I'll leave that decision to your former students." Alvin stared at his students and said while crying "you will spare my life right? I've become a good teacher on you the least and I'll change my pathways in life. Please have mercy and forgive me!" Glen said, "don't think that we're going to forgive you after our classmates have died because of this set-up expedition and school event." The girl that he violated said, "scum like deserve to die and rot in hell forever!"
Alvin gives an evil laugh and said "fools, do you think I won't be able to escape here?" Alvin took out an orb with his right hand and he said "I won't enter this most dangerous dungeon without a way to get out of here." Rosario said "do you think I don't know that? I also prepare something for you."
Alvin screams in pain as a monster that Rosario has first met and killed by Rory ate his right arm. The orb rolled towards Rosario and pick it up. Rosario said "I see, so this is a teleportation tool. It might become useful for me in the future so I'll take it." Rosario used skill and said, "devour." Smoke came out of Rosario's hand and devours the orb and disappears.
More monsters came and surround Alvin and the boy he killed. Alvin said, "I thought you're going to spare my life?!" Rosario said "it was a lie though. Do you think that I'm that kind of girl that ignores what you do on a fellow girl like me?" Rosario said to herself "that reason of mine is a lie. The reason why I want this man dead is that he reminds me of what happened to my girlfriend in my past life. She was being raped and killed just like what happened to Rossian. I made a promise to myself that if I had the power to kill any man like that, I wouldn't hesitate to kill them." Rosario said "man like you, Alvin. I'll kill any of you if we come to cross our paths together." Alvin said "I'm the right hand of king Cecil Necron of Necron kingdom! You can't let me die!" Rosario said "Your status in your kingdom means nothing to me and I can eliminate you this instant." Alvin asked "just who are you?" Rosario said "sigh, since you're about to die I'll tell you who I'm. I'm Rosario Mourning Star the reincarnation of the king of the demon lord Diablo and I'm back to reclaim my throne. Those who will try to stand in my way, I'll crush them all." The monsters feast on the professor's body and so on the dead boy.
Rosario walks out and stared at the students. She said "you guys, should leave this area before the monsters are done eating. Those monsters are much more attracted to blood so that's why they are ignoring you, but it doesn't mean that they won't come after you once they are done." One of the girls said, "but we're too weak to walk and most of us have run out of stamina." Rosario said, "Janna, I want you to heal them all."
Rory got annoyed and said "I don't know why the master is helping these filthy humans. They don't deserve our masters' help." Rengar said, "I agree with you, humans are scum." Rosario said "but I have to do this to fulfill my role as a demon lord. However, I'm just a former demon lord right now." Sebastian asked, "and what is that role master?" Rosario said "the role of the demon lord is to correct the wrongdoings of the Gods. The 2 factions of the Gods keep on fighting each other for centuries and the living creatures of this world end up being casualties. The reason why they are kept on fighting is that they want to decide should humans should go extinct or let them live. On the other hand, we demon lords want each species to coexist with each other, even if you're a human. However, someone is destroying the demon lord's plans over and over and I don't know who or what is it."
Athena said, "it's probably the work of the Demonoids master." Rosario said, "Demonoid and demons are the same, right?" Athena answered "no master." Rosario asked then what is it?" Athena answered "Demonoids are the most different species of demons." Rosario asked "what do you mean by that?" Athena answered "in terms of the process of becoming a demon it's different from other demons." Rosario asked "how Athena?" Athena answered "you see when a certain individual wants to become a demon in a normal process they will have to pass 3 stages." Rosario asked, "well what are those stages?" Athena answered "1st humans will experience breakdowns that will break them physically and mentally. In that breakdown process, you will experience death along the way. On the 2nd stage, you will awaken as full-blown blood-sucking creatures." Rosario said "like vampires right?" Athena said "exactly master, you will turn into a vampire, and if you reached the minimum requirement of human blood that you take away you are ready for the last stage." Rosario asked "and what is that?" Athena answered "the demon awakening. In this process when you die you will go into the demon realm to harvest the energy of the human blood that you take. The more you take blood from humans the more you become a powerful awaken demon. Rory is experiencing this process. She is about to awaken as a demon during your gaming life but it was postponed because she answered your summoning ritual." Rosario said to herself "I see, I should have postponed my summoning that time so that Rory could become an awakened demon. It will be convenient today if that is what happened." Athena said, "don't worry master she will awaken someday but it will take a year for it to happen." Rosario said "I hope we don't have any enemies that we couldn't handle along the way." Athena said with confidence "rest assured master if you were able to release Rose nor Keros no one will try to make an enemy of you." Rosario said "and for that to happen I must go to the highest floor of my dungeon, the 100th floor" Athena answered "right master," Rosario said now then "can you explain how people became demonoids?" Athena said "it's a work of a cursed magic." Rosario asked "what kind of curse is that?" Athena answered "since it was created were I haven't existed I don't have any knowledge about it but this curse turns you into a full-blown demon in an instant. Cursed people will become a demon in an instant without passing the stages." Rosario said "that might be a powerful curse magic." Athena said "yes master and we know that curse magic has consequences. The more powerful the curse is the more terrifying the consequences are."
Rory punched the wall beside her and said "you know what I think master? I think humans, Gods, and angels should die for good." She walks out right after saying this. Rengar said, "get back here and apologize to our master!" Rosario said "let her be, I don't want her to push herself so hard. She might have experienced something awful in her life, in the hands of those people." Rengar said, "if that is what your wish master." Sebastian said, "you are different from other slave masters." Rosario asked, "what do you mean?" Sebastian said, "mostly masters of slaves out there are far crueler unlike you, you are gentle and kind to us." Rosario said, "but I always do some perverted things though." Rengar said, "but not to the same extent as that professor." Rosario said, "well, maybe I'm just that kind of guy." Sebastian said, "if you say so."
Janna said, "I'm done healing them master!" Rosario said "good job Janna." Rosario faced the students and said "get on your feet, we're going to get out of here. We will help you get out of this dungeon in one piece." One of the boys said, "what's the point of getting out of here if our life out there is gone." Rosario said "if I were in your shoes I would take this opportunity to start everything from scratch again. It may be hard but I'm not gonna give up because I'm not afraid to try. There may be a lot of risks but I'm not gonna give in. Whatever happened in my past I'll use it as my basis on how to deal with the future so that the mistake that I have in my past won't repeat and those painful things that I've encountered in my past I'll use as an experience on how to deal with much more painful things in the future. Look, as long as you're alive there's still a chance for you to be able to acquire the life you wanted, just don't give up and keep on trying. You may lose a lot of important things along the way but your future will be fruitful so I urge you to stand up and grab this opportunity to get out of this dungeon alive." All of them become motivated and they all stand up and walk with Rosario.
While things are ongoing, there is an old man with a white robe like a priest staring in a sealed and dark asylum and kneeling. The old man shouted "Satan! King of the demonoids! I'm here to make a bargain!" After he said that a powerful force slammed at the asylum making the whole place rumble. A demonic voice can be heard asking "whooooare youuu?" The old man answered, "I-I'm from the future my name is Castor I'm a member of the 7 sages of the Yggdrasil." A demonic hand came out, grab his neck and carry him. Satan said in an angry tone "sorry, I don't want to waste my time with the puppets of Gods so I'm going to kill you!" Castor is suffocating and said, "w-wait before you kill me, here me out first." Satan lets go of him and Castor coughs as he recovers his breathing. Satan said "all right, I'll hear you out." Castor asked, "you plan to take over the Demon lord's territories right?" Satan said "yes and how did you know that?" Castor said, "I told you I came from the future so I know what happen." Satan asked, "what happened?" Castor said, "your army has failed."
Satan got angry and said "you're lying! There is no way my army will fail!" Castor said, "you can search through my memories and see for yourself." Satan grabs Castor's head and uses ancient hax magic to search through his memory. Satan said "that bastard bitch! Who is she?! Castor said "she's the newest demon lord. Her name is Rosario Mourning Star. We both want her dead so that's why I'm here to ask for your help. I can't touch her even in the past because the strongest guardian deity Keros and the goddess of demons Rose is protecting her." Satan said "it seems interesting and what will I get out of helping you?" Castor said, "you can't take anything that you want from me, just name it." Satan said "I'll think about what I want but for now I'll give the residue of my soul to you. This has power that surpasses Keros's power. He will be no match against you." Castor accepted the residue of Satan's soul and suddenly Castor drastically changed. He has long, curly black hair with a black crown. He has a king's robe with a crest of an inverted cross. Castor said "I feel like there is a power surging within my body. Let me try to let it out. Aaaaahhhhhhh!" He released his aura and let it go on a rampage. Castor said, "with this, I'll be able to kill that woman!" Castor stared at the asylum and said "I'll be taking my leave now." Satan grabs his neck and carries him again. Satan said, "you better kill her, or else I'll bring you to hell and torture you for eternity." Satan let go of him after saying it. Castor said, "I-I will kill her."
Castor disappeared in an instant after that a light particle came out of nowhere. A voice came out of the particle saying "master Satan it's me Vinland, I have 3 news for you." Satan said, "what is it?" Vinland said "my first news is that tomorrow the 4 superior rulers are going to have a meeting. The contents of the meeting contain 2 things. The first is about how to end this endless war of different species. Second, they're creating a plan on how are they going to exterminate all of the demonoids around this world." Satan said "oh, they're ganging up on us. I want you to update me on their .meeting." Vinland said "yes master, my 2nd news is that we already know who is the blue-haired and a time traveler woman that messed up your daughters/Medusas plan on taking over the Elvian nation." Satan asked "who is she?" Vinland answered "her name is Rosario Mourning Star." Satan become speechless for a sec. Satan said "what a coincidence. Someone asked me just now to give the power to eliminate that woman." Vinland said "why did he ask you that?" Satan said "that woman is being protected by Keros and Rose but there must be something more into it." Vinland said "wait? Keros was able to break free from your sealing magic?" Satan said "I bet someone helps him manage to break free so I'm putting Kelix on the task of helping Castor to deal with that woman, tell that to Kelix." Vinland said "yes master, my 3rd news is that this is the time that the reincarnation of Xerxis the ancient strongest God is born, that was on Beelzebubs theory since he was the one who fought with this unknown time traveler during the Athrima war. The only clues that we got about this person are that he is the holder of the skill great sage that was being named Athena and also she has a guardian deity best friend name Mellioness." Satan asked "how are we going to find him?" Vinland said "according to Beelzebub 300 from the Athrima war. This person will try to stop Medusa from advancing on her plans of taking over the standing elvian nation so I proposed that we overtake the last standing kingdom of elf now. We'll set up a trap to capture that person right after we take over their kingdom. Then we will take its power to revive Asmodeus." Satan asked "where is the location of the Elvian nation?" Vinland said "it's inside the dungeon of demon lord Diablo." Satan asked "how are you going to infiltrate that place? It's under the protection of demon lords?" Vinland said "we will think of a way. Just be patient my lord, soon this world will fall on Asmodeus's hands."