fate/build: be the one

Prologue: new day and the summoning

at a certain café in japan where our 4 riders are relaxing after evolto killebus and metal build they all they want is to relax  the ryuga kazumi and gentoku are on the roof for some relax time 

Ryuga: "man this is the time after we want though." Ryuga said to the Kazumi and Gentoku 

Kazumi: "i know after that battles to defect Evolto i say we earn it do you think so to beardo?" he ask Gentoku 

Gentoku: "yes i do say we earn it." they all relax with no more battles.. 

Sento: " Get up idiots we got a someone who is asking for our help." Sento appers out of nowhere and says 

all 3:

 all 3: " WHAT THE HELL SENTO?!!!"

Sento: " Do not worry about that lets go to the basement the person i said is in she needs our help." 

all 3 : "and here we thought we can relax too."

all of them go down to the basement and too see

Ryuga: "We are not see a blue floating ball am i? 

Kazumi and gentoku: " Nope." 

they are indeed see a blue floating ball 

Sento: " Ok now who are you?" 

???: " I am alaya i am part of the world and i need your help." alaya says 

Sento: " What is the help?" he says he is curies about the help from the world of  all things

Alaya: Before i do let me explain some things you might need to know." and than alaya beings to explain 

some time later alaya is done explaining things and they all listen 

Sento: " I see now you did our help to prevent the ruler from the third grail war making his wish in the grand holy grail war that is not normal from the standard  grail war  is that right?" 

Alaya: " That is right its why i come to you four you four faced something that both me and gaia can not defect now before you summon your servants pick what class remember your only pick one." alaya shows the cards of the classes and sento goes first 

Sento: " Um i pick caster since i am the brains." Ryuga goes next 

Ryuga" I pick saber because of they are the strongest."  Kazumi goes next 

Kazumi" I pick archer since its not wrong to have a long range fighter." and Gentoku goes last 

Gentoku: " I pick berserker." the other riders understand on why 

Alaya: " Good now lets summon them lucky i did a little edit to the chant i change the color to build that way it will work now lets begin this." the riders nods and see their right hands their command seals which are their rider symbols 

all 4: Let silver and steel be the essence.

Let stone and the archduke of contracts be the foundation.

Let Build be the color I pay tribute to.

Let rise a wall against the wind that shall fall.

Let the four cardinal gates close.

Let the three-forked road from the crown reaching unto the Kingdom rotate.

Let it be declared now; your flesh shall serve under me, and my fate shall be with your sword.

Submit to the beckoning of the Holy Grail.

Answer, if you would submit to this will and this truth.

An oath shall be sworn here.

I shall attain all virtues of all of Heaven;

I shall have dominion over all evils of all of Hell.

Yet you shall serve with your eyes clouded by chaos.

For you would be one caged in madness.

I shall wield your chains.

From the Seventh Heaven, attended to by three great words of power,

come forth from the ring of restraint, protector of the holy balance!

smoke is everywhere and the riders have their eyes closed and once it clears they see the figures 

???: " We ask of you are you our masters?" 

next Build 1: First battle and meeting with the black faction 

this is a new chapter in honor of the LB 5 and thank you for the votes