I did my research on the Hassan and the Zabaniya

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As another set before me, I needed a way to restore our old glory. I am only one person, and the requirement, of being one of us at least in the time was having no parents or familiars or having a relationship with the order like being a son of one of them. But nowadays is hard, not impossible, but hard, I am the only one and I'm not going to use a hundred personas to search for another successor. As they said they are part of me but I'm not going to use them to search for people. They are assassins, the obligation of searching fr the next generation resides on me.

Rias informed me about what happened in the familiar forest, it seemed like only Asia managed to get a familiar, a dragon, they are very rare to see and even harder to make a contract with one, so she must be very lucky, or special.

She wanted to train her peerage, especially Issei. Is very noticeable that she likes him more than the rest, that will be her downfall. I arrived and I was alone for a while so sat and looked at a cat that passed by. I love them but cannot touch them.

So when they finally arrived they trained their physical form, not combat or mental training, only physical. So I was there not doing anything so I sat there looking at them, I noticed how Asia barely had any strength, or how Issei was almost defeated, they need to get stronger. Before he came.

Rias: Sorry Y/n, for making you come. But they need to train.

Y/N: It is alright Lady Gremory.

Rias: Why do you call me all the time Lady. I'm not that old.

Y/N: You are the next head of the Gremory clan. There is no more motive.

Rias: But we are friends.

Y/N: Uh?

Rias: Uh?

She really considered me as a friend? Why? She barely knows about me. Also, the reason we met was that her brother asked my master a favor.

Rias: Are we not?

I didn't answer, I don't know the answer to that. I only know her because of this job, the same could be said about her. After a while, their classes began so I didn't have anything to do, so I began planning my coming to one of the places I have called home. The old base was the ruins of the Alamut, but when they took that base we had to move to another place so we changed a place when nobody would desire to set afoot, it came to mind to set in the desert a place hard enough to outsiders, and easy to travel with our skills.

After a couple of days, the Orc continued their "training" if you could call it that. And continued their duties of accomplishing contracts. But then I received a call from master.

Y/N:...

Master: Hello N/N! 

Y/N: Master.

Master: You could be more excited. Well, I wanted to tell you something. In a couple of days, your job will be done. So go preparing your bags. I told a friend to transport you to wherever you tell her. I still don't know where is your home. One day you should show me.

Y/N: No.

Master: Why no! You say you are my servant but still, you deny me.

Y/N: That place is sacred for me and my ancestors. Also, you said that I don't need to be your servant. But still, I will follow your orders, as you bested me in combat.

Master: Then let me go there!

Y/N: No.

Master: You are so mean N/N!(sight) But I know I won't reach anywhere discussing with you. I will tell her to give you a contract too, you will need to come back to Kuoh.

Y/N: Why?

Master. I know it doesn't seem like that important place, but my gut tells me that that place will have very exciting things for you.

Y/N: If that is your order, I will obey.

Master: Okay, I will call you back, they need me around here. See you later.

I hung up and began preparing the things I would need for the travel. I don't know how long would be the travel or what things I will learn. So I have prepared food for half a month maybe for a couple of days more. Even if I don't need to eat that much I think I will train with the new abilities I gather on this travel.

The next day we gathered in the ORC, every and each of them was here, then Grayfia appeared from nowhere.

Rias: Grayfia what are you doing here?

Grayfai: I came here to supervise the meeting today.

Then another glyph appeared on the floor. This one produced some flames and emanated heat.

???: Ah is good to be around this place again. Riser has arrived.

Riser Phenex, the next head of the Phenex clan, one of the few that knew about my existence, not my order but my abilities, I think the only ones that know about the order are the heads of the factions, and people near them, Lady Gremory brother was one of the four Mau and he decided about the marriage between these two. Even if he doesn't agree, it was because it in the time was needed. So in case if anything happened he asked me to be around to protect her little sister. So he must have informed the father of Riser of my presence only to make sure that he does not pass some bounds.

He was a spoiled kid that was given everything in his life, so he considered himself better than everyone. I am only calling him a kid because of the way he acts. I know that everything will go down at any moment, because of his attitude.

Y/N(Mentally): Hundred Personas act if anyone in the room goes for an attack, do not kill.

Hundred Faces: We are ready for anything.

He continued bragging and not behaving like a human being more like a degenerate. At some point he bragged about having a full peerage, so he brought them also here, he bragged more because Issei was jealous because his peerage they were all women, even her little sister, when looked towards her she always hid behind someone.

After a while, Issei had enough and went to attack and so did one of the pieces of Riser to protect her king. Every one of the ORC yelled at Issei when he went for the attack, but in less than a second Issei and Riser piece had someone holding them with a dagger near their throats.

Everyone was in shock because they didn't know who they were. But they recognized one thing in common the mask.

Riser: Riser demands an explication for the actions of the mere human.

Y/N: To make sure things goes to worst.

Some of the others pieces went to attack also but they stopped when they noticed hoe they also had a dagger near their throat and pinning them to the ground.

Riser: Are you trying to make Riser furious? because you are making a great job.

Y/N: If decide to take this battle then you won't make it to see the sunrise.

Grayfia: Stop!

Riser: Even the great Riser knows that he shouldn't mess with the strongest queen is a bad decision.

The personas looked at me looking for the next order.

Y/N: Stop, you did a good job.

They stopped pinning them to the ground got up and bow towards me and banished towards my shadow.

Riser: Mark the words of Riser, this action won't go unnoticed.

I didn't take it seriously. After some chat between both peerages, it was decided that they will have a rating game. If the ORC wins Rias will be free to marry anyone she decides, if Riser wins they will marry. Then Riser and peerage went giving the ORC a chance to train for a week before the rating game.

Issei: Okay we can do this! We have Y/N After all.

Kiba: Yeah he is really strong. And he has those people that appeared before.

Issei: They had a strong grip.

Everyone was happy because they thought I could help them. Rias had a sad face. She will need to tell them.

Rias: Sadly Y/N won't be able to help us. He is not part of my peerage.

Asia: B-but they could make an exception. He has been helping us.

Koneko: He has worked with us for a long time.

Rias: He had a job, he was just following orders from her master.

Issei: But he can stay and help us right?

Everyone looked at me.

Y/N: I cannot, I need to return home.

Issei: Why! Rias is going to be married against her will!

Y/N: You think I don't understand. But I do. I am a human, I cannot participate in rating games. And I cannot be in every place at the same time.

Issei: But even so!

Y/N: I need to return home. I must do something. I am sorry but I cannot do anything.

Grayfia: I wanted to talk about that. your master wasn't specific where you wanted to go.

Y/N: Lady Gremory do you have a world map.

Rias: Yes we do. Give me a moment.

She displayed a world map on the table. I looked at the map and then pointed at the middle of the desert.

Akeno: Are you sure you pointed right?

Rias: Yeah, there is nothing around there, and you will die if you stay around.

Y/N: I am sure.

Grayfia: Will be done, tomorrow we will depart to the Gremory manor and then there.

I nodded and went home to see if everything I needed to have for the travel was in the bag already. I received another call from master yelling at me because I didn't tell her about the Hassan of Hundred Faces. But after some explanation she understood. 

The next day we reunited at the front of the ORC.

Rias: Is everyone ready.

ORC: YES!

Soon Grayfia transported us to the front of the manor.

Grayfia: If any of you need to say something now is the time.

I didn't say anything.

Akeno: Are you sure you have everything in that tiny bag.

Y/N: Yes.

Asia: Can any of us company you?

Y/N: No. Is a sacred place for me.

Issei: Promise me one thing. You will come back as soon as possible. You are our friend.

He considers me a friend? We barely know each other, but I don't care if he considers me one.

Y/N: Will do. Goodbye.

Each of them said their goodbyes to me and soon we were in the middle of the desert, I missed this, the feeling of sand under my feet, the heat of the sun on my skin.

Grayfia: Use this when you need to come back.

She gave me a contract of hers.

Y/N: You should go, a sandstorm is coming I don't think you will endure it.

Grayfia: Sure, you know that one day you will need to show the place to the next Hassan right. Or maybe be the last of your order.

Y/N: Yeah, I am not afraid of that. Never will, I will endure the burden of the last one of the Hassan. (turning around and begin walking) See you later Grayfia.

Grayfia: Goodbye Hassan-i-Sabbah.

After that, she teleported back to wherever her home is, I continued my walking with my direction in mind.

https://youtu.be/Ryhv0Gguljs