In this multiple world (Multiverse) there are those that have similarities to our world and some that are not the same, for example worlds that have magic, worlds that have higher technology, worlds that have long since lost their lives, etc.
In a dimension or Throne of Heroes where hero spirits sleep, Gaia summons the first two heroes from the Saber and Archer classes. The two servants opened their eyes and looked around the white room & looked, the two servants thought why they were summoned to this room, then they heard the voice of Gaia speaking.
Gaia: I summoned you two here to save or protect a world that is beginning to crumble.
The two Servants were shocked and confused because they knew that Gaia could almost see, know, and overcome all the disasters that would destroy the world. Moreover, she could summon 7 Grand Servants if that was necessary, Gaia said again. Gaia knew what the two servants were thinking and spoke again.
Gaia: I can't summon a grand servant because that world is not connected to me.
Both of them were even more surprised that Gaia was not connected/connected to that world. Then one of the two servants spoke.
??? male: So you called me and Archer into this room to protect that world didn't you Gaia? [the one who spoke just now was a saber.]
(The appearance of a saber wearing full silvery white armor, bluish clothes, blonde hair, and green eyes. His name is Arthur Pendrago). Archer asked confirming saber's question.
Archer: Is what saber said true gaia? [archer also showed his certainty to Gaia. Questions asked by saber.]
(the appearance of the archer wearing a white shirt with purplish blue lines and motifs like beautiful clothes, brownish black hair. His name is Arjuna). Gaia answered the two servants' questions.
Gaia: That's right I want you two to protect that world from the calamity which is called 'Wave'. Saber & Archer: Wave?
Gaia: True a wave. This wave is like teleportation magic that can transport and send monsters and even otherworldly humans to that world.
Archer: Wait you said sending humans, does that mean the two of us have to fight those otherworldly humans.
Gaia: That's right Archer but it could be that you will fight otherworldly heroes and if you lose or die that world will be destroyed.
Archer: That world will be destroyed!?
Saber: Wouldn't it be just me and Archer would it be too difficult to protect that world.
Gaia: I can only choose you two because two legendary weapons have already chosen you.
The two servants began to see golden swords and bows and two crystal balls of different colors suddenly appeared in front of them. Saber & Archer looked at each other, Seber started to speak.
Saber: Are these two weapons from that world?
Gaia: It's true that these two weapons succeeded. I transferred them to this world and there I chose which servant was suitable to become the owner of these two weapons. They have you two as their master.
Archer: Wait, are there any weapons other than swords and bows?
Gaia: It's true that there are 4 weapons namely Sword, Spear, Bow, and Shield.
Saber: Which means the other two weapons have already chosen their master and those two weapons.... -
Archer: Spear and Shield are right Gaia.
The two servants waited for Gaia to speak and Gaia answered the second servant's question "Correct" and began to give the two servants knowledge about the modern world, Gaia changed the saber and archer clothes into modern clothes, and also said don't trust people in that world too much because most humans in this world are greedy, cunning, and manipulative so make sure to choose a trusted partner and moreover the strength of both of them will be the same when they are alive in their peak state.
Gaia: I think that's enough. There is one more thing you two are not allowed to call your name with your class name.
Saber & Archer awesome their heads. After that the two servants grabbed the two weapons and the two crystal balls emitted a very bright, blinding light that made the two servants close their eyes. After the blinding light dimmed the two servants opened their eyes to look around and the two servants saw 2 people they didn't know but the two servants were sure that the two foreigners were Japanese.
(Because they've been summoned to another world |isekai| so I'll call them by the two servant's real names). One of the 2 servants started talking.
Arthur: Hi may I ask your names?...oh! where are my manners my name is Arthur.
Arjuna: Greetings Arthur I am Arjuna nice to know you.
(before Arthur/Saber spoke Arthur & Arjuna glanced at each other to not recognize each other). One of the two Japanese started talking.
???male: Wait Arthur and Arjuna aa..... aa..... are you guys from that story..!?
continued.....