Y/n Pov:

I was back home with my mom and my sister. I told them about how me and Rias are dating my mom was happy but my sister. Was more on the upset side I think I know why but what makes me wonder, how come my magic is been more different lately.

two days before:

I was testing out a new magic combination between lighting and ice magic but every time I try it but it seems, my magic has been going crazy for some odd reason. Like it did not won't to go off.

Y/n: "Hey Jet what's going with my magic." She did not answer. "Jet?" Again nothing. "JET." She does not answer this is strange usually she would answer like a mom would the first time. I shrug it off and went home.

Now:

Sky: "You okay dear?"

Y/n: "Huh what?"

Sky: "When I asked you about what are you and Rias going to do you just look at your hand."

Y/n: "Well I was just thinking that's all mom. But I'm going to do my homework and go to bed okay." She nods at me and I walk away as I grab a monster drink to make sure I stay up just incase I have to do extra work. 

few hours later:

I was starting to get tried and still no Jet talking usually she talks to me when I'm over doing work. But still no voice this was making me worried. But I had to sleep and so I did and let the darkness come in and fell asleep.

Trevor Pov:

Trevor: "I'm glad my goddess is still alive after all these years. Now I may start my rite to have such power and reach true power. Right wisdom?"

Wisdom: "Yes it will be done soon under one roof for they have me, I want them back that both will prove a threat,  if not though carful, for I am at a weaken state. What will you do my host, will you kill them now? will you take them now? will you eat them now?"

Trevor: "What does the eat part mean?"

Wisdom: "It means what it states as eat them and you will gain that power just as quick as, getting energy like you humans eat meat or how you drink and gain energy."

Trevor: "I might have done that in the past but I want more then that they need to know that they are different for you have now sealed her away. I can see why the gods fear you Wisdom."

Wisdom: "Oh? are you sacred of me if so you know what happens when you feel fear."

Trevor: "HA no for I am no scared of a item on my body."

Wisdom: "You humans are lucky half of the gods and goddess I fought are either dead or are just broken like how. You humans use your toys of war and break each others stuff."

Trevor: "Well it is my goal to stop such things to break are will our might, our mind our soul, from you gods and goddess."

Wisdom: "And yet here we are still you can never break true fate itself for we gods and goddess use you all for our own deeds. So does the devils and angles and fallen they don't care for you humans, they only care for there will to live. You will never break that in your life. Even in the millions of years if not beyond that you still won't scratch the surface of breaking fate."

Trevor: "That's why I got you to break this horrible fate for us humans I will cut the whole universe if need be I will make all races of devils, angles, and fallen plus gods and goddess kneel before me I will break them shatter them. And make them know we humans are not to be toyed with at all."

Wisdom: "This is why I like you kid you have power in your words. AHHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHa uhh you funny kid now what will you do after words?"

Trevor: "That's another time for you Wisdom...........But what is your true name Wisdom?"

Wisdom: "I will not answer until I get my full power back, for even saying my name will make the whole world, Heaven, Hell, and Grigori shake in fear. For I will not say my name just know my name for now will be Wisdom."

Trevor: "Your that powerful when back together?"

Wisdom: "It took almost everybody of the gods and goddess to beat me the only reason I lost is because I wanted to lose. And so I let them beat me and make it fun for me nothing more nothing less human. Now we must leave before those devils sense us." We both left the house sight of my goddess.

Trevor: "One more thing Wisdom?"

Wisdom: "What is it human?"

Trevor: "Can you beat the dragons?"

Wisdom: "Well in a power fight against the red one he can overcome me but that does not mean I can use his own power against him. The white one is nothing to my madness for it is endless everyone and everything has a weakness in them. The white one Vail is battle hungry wants to fight wants to kill. He will know true power when it comes to my madness. And for the red one his power is dumb if he did not found over boobs or ass or any women he will be just as a threat to me as Vail is. But I know his weakness as well I will break him shatter his will to fight live and power. Dragons take great pride in there power and so I will break that damn lizards power and I will shatter Vails will to fight anymore when he meets Madness itself. So do they yes and no as I am now they will kill me but it will still prove a big threat to either one."

Trevor: "You seem to hate them very badly."

Wisdom: "I do for they are the reason why my project failed the first time and had to remake it and so I will kill them no matter what."

Sirzechs Pov: 

I wake up to a normal day in the underworld and get ready for work as I did I got news from Grayfia. 

Grayfia: "My lord I have troubling news."

Sirzechs: "What is it Grayfia?"

Grayfia: "I got news that a abnormal amounts of power was coming a from a prison."

Sirzechs: "That should be no problem for Rias and the others."

Grayfia: "No my lord it seems all the people there are dead and became monsters they have the traits of angle, fallen and devil." This caught me very off guard.

Sirzechs: "What do you mean a Nephilim is here?"

Grayfia: "No for this things had traces of madness magic in them."

Sirzechs: "It seems he is on the move now the Mad God has awaken. Call Rias and her peerage this is a matter she must know and get the main families together as well."

Grayfia: "My lord I will do so." As she teleports away, and I just look at the dark red clouds. As I punched my wall and made a whole in the wall.

Sirzechs: "DAMNIT."

Rias Pov:

end of school:

Sadly Y/n was still grounded but she is almost off two more days and so she had to leave home as she knew her mother was scary when she is mad. We where about to start our normal missions until Grayfia was already in the ORC waiting for us.

Rias: "Grayfia what is this about?"

Grayfia: "It's better we go meet your brother he told me to bring the whole ORC together. But it seems that Y/n is not here." 

Rias: "Well she is not part of the ORC so yeah."

Grayfia: "Oh I see then well let us go."

Issei: "What's going on pres.?"

Rias: "To be honest I don't even know myself this must be big."

Grayfia: "It is for all the main head households will also be there." 

Akeno: "It must be a big deal then if all them are going to be in one room."

Issei: "What does that mean?"

Kiba: "It means that we might be going to war with someone or something."

Issei: "Oh shit." We where all together and summoned into one room. With all four great Satan's 

Sirzechs: "Good to see you sister come over here this will involve you guys the most." I look around me and even Serafall was even more serious then her normal self.

Serafall: "So Sirzechs we all hear he has return is it true."

Sirzechs: "It is for he has come back and seems to be looking for something?"

Ajuka: "So your saying he is back." I see my brother face grew with anger and annoyance.

Sirzechs: "Oh yeah there is a reason why we brought in Rias and her peerage is due to the actives in her area."

Rias: "What do you mean brother what is going on."

Sirzechs: "You kids will never know but it's time we will be facing a foe as powerful if not even more powerful then red dragon himself ."

Issei: "Wait what for real. Someone much stronger then Ddraig."

Ddraig: "He is not wrong Issei for I have rivals as well but there was one who can even laugh at death itself."

Sirzechs: "I will tell them. A long time ago there was one a young god I won't say his name but let's call him Ed, Ed was a powerful young god and was told to be so powerful he can be consider next to the big man himself. But it all changed when the young boy wanted to learn more about the power of all races. And let me remind you this boy's power is beyond some of us. Mind reading seeing the future, high regeneration, magic manipulation, power manipulation. And that's only the one's we know about he has many more. The only reason we don't got much info about his other powers is due to the people who face him either died or became mentally unstable. And those who are unstable don't even know how to speak anymore for they seem to lost there mind." 

Asia: "That's.......That's very scary how can someone do that."

Sirzechs: "I know it is bad but thanks to many people's we where with able to find him and stop him. Many gods and goddess lost there lives that day."

Akeno: "How many are we talking?"

Sirzechs: "We lost count." This made me pale in horror to hear such things.

Ajuka: "He is not wrong we got lucky because at the end of the fight we where able to stop whatever he was doing. He is a threat that we all had to work together to stop him took the angels, fallen and us to stop him. Even the red dragon knows this he fought him once. Before he was sealed away am I right."

Ddraig: "I did meet a god once and he was with able to best me the only reason why I lived after I was sealed away was because he told me he got bored."

Ajuka: "Sadly this Mad God is far to powerful to be brought back to life."

Akeno: "Wait Ddraig was he the one who you where talking about?"

Ddraig: "It is I used everything I had to hurt him and even tried to erase him from realty itself. And yet he came back to life. He can't die at all and on that day I felt true fear that day." Everyone was quite to hear one of the most powerful dragons know to all the races. To feel fear this is new and very very scary to hear.

Ajuka: "As he said we had to seal this Mad God away. For many reasons we where luckily as well for he was looking at us for his project."

Sirzechs: "Half of the reason why we lost numerous gods and goddess if it was not for those gods and goddess we would have met there fate as well. And not be talking as we speak."

Rias: "Brother why is he back or how is he back."

Sirzechs: "Well we been doing our own searching for the sighs of how he is coming back and we found out. That he has a powerful and dangerous power. With all the madness and corruption from all races we learned that he can take over hosts bodies over. Anything that is evil he will take control of is. Which we call the endless one you kill him he comes back sealed away he will take control of someone. He deems worthy to himself, and there was none for the longest times because we killed the ones we thought where the hosts. And so far we where right."

Rias: "So you been killing people who are told this man's hosts."

Sirzechs: "Yes and I will gladly do it again and again."

Rias: "WHY."

Sirzechs: "I had my reasons it had something to do with everyone I cared about before he was sealed away."

Holy war:

Young Sirzechs Pov:

Mad God: "HAHAHAHAHAHAHAHAHAHAHA YES FIGHT ME HATE ME HURT ME KILL ME OVER AND OVER AND OVER AND OVER AGAIN AND AGAIN AND AGAIN  HAHAHAHAHAHAHAHAHAHA."

Sirzechs: "BASTARD."

Mad God: Come at me for you weak devils weak angels weak fallen will never beat me." I use as much power to hurt this Mad God but he keeps on messing with magic in the air. "Oh is the little devil getting upset hahahahaha yes try and struggle for I will rip all devils fallen and angles and gods from there high horse and break them. Humans will know who there true god soon and when the hold my love to them they will never know true pain, fear, hate I don't care if I lose my power if it means I get my answer, then I will gladly do it for I am-" As someone stabs him behind it was Azrael "Not bad bird you know I can live through this."

Azrael: "I know and so we are going to seal you away and that project you where working on so much." This made all races even me happy and so we start to do a ritual to seal him away. But what caught me on edge was him grinning at us. Mostly at me.

Mad God: "Have fun with your wife and family dear devil for I will be the one to break you and all things you love so dearly." He was joking right?

Now:

Sirzechs Pov:

Sirzechs: "But Rias no matter what do not go to this palace okay for it will be your undoing okay. This was his last sighting but do not go no matter what this is a order and that includes your peerage as well." They all nod at me and sit back down.

Madness Pov:

I was laying in my bed of bodies mostly limbs falling every time I moved for it was nice to know my madness is starting to reach the underworld now.

(Well again not much of Y/n but we are going to see more of the plot to come and this mad god is one of my most powerful characters I ever made. And so I wanted it to be a bigger problem then Trihexa And I know that it's a big order as well. The reason why I brought the mad god in so quick was because this is meant to be Y/n main bad guy that is why, and so I went to give her my biggest fighter ever so this will be a tough fight for anyone. So I hope you guys like where this is going and hope don't mind a very powerful foe for Y/n. Anyways omage1 out)