Y/n: the mechanical brawler of Darkus and Pyrus

chapter 13 past creation appears, trio of terror, fear lives on part 2

As three mecha monster appear and roar of terror. Draig and Albion felt they seen them before but unable understand how they since it. Ruby felt worry for Y/n, as he brought out his gauthlet to ready battle.
Ruby: Y/n do you have name of them.
Rias: y/n what do mean biggest mistakes to make them?
Momo(dxd): what happen?
Y/n sigh and control his emotions right now.
Y/n: I well tell you after this but I well tell you thier name.
Y/n looks at smlilodon bestike monster and roar crazy.
Y/n: cat like beast is Saber X, fastest of group, no one match its speed.
Then he look at mosasaurus like beast target his prey infront of then.
Y/n: one fish like reptile name Aqua Y, very strong swimmer and never miss its target.
And finally look at trex like beasts roar both mecha to follow orders.
Y/n: finally big guy with Dangerous teeth name Groudon Z, current leader and alpha.
Before anything happen, a gust of white aura appear which Y/n look surprised person walk out of their.

Ruby: no way.
Momo(dxd): is that
Y/n: velvet...

Velvet change, she lost her brown hair to white color, eyes shifting to red color. Her clothes change with a crown like in he forehead, and gauthlet with time in it. Audience shock, with male blush while girls jealous of this. Coco responded to velvet new fprm, as well for fox sine he can smell air.
Coco: velvet is that you.
Velvet: yes.
Fox: w..what happen to you.
Velvet:....
Coco: coms on help us win match now!
Velvet brought her unknown gauthlet and activate power.
Coco: velvet what are you doing!
Velvet: fell pain my leader for hurting me!
Three monster roar together as Jet sit in side line events happen.
Jet: this got interesting.
which Draig and Albion looks see dragon with three heads appear behind the three mecha monster.

Draig and Albion fear as Dragon disappeared in shadows from view.
Draig:'what how I thought..., Y/n he better have explanation to do!'
Back to fight, three mecha roar, as velvet activate ability card.
Velvet: fusion ability activate trio beam attack!
Groudon Z, Aqua Y, and Saber X open their mouth, form three different color blast.

(Groudon z red blast)

(Aqua Y blue blast)

(Saber X yellow blast)
Three combine their move into one, then jet realized thier move.
Jet: triple ability activate dark dome.
A shadow arena form around arena, then Y/n and every person take cover.
Velvet: fire now.
Three attack destroy arena, leaves Coco, and fox badly damages as she loo at jet.
Velvet: your next.
But jet went fast as Darkus Destroyah attack three mecha monster, make them summit since they oy in a prototype form, not fully strong yet. Jet is behind velvet as he knock her out with chop back neck.
Jet: sleep well.
As he grab her down gently, and everyone got very instant of battle of people.
Announcer: um oh yeah winner Jet Drago.
As everyone yell for thrill of battle as united academy just shock that battle is terribly pain. Atlas solider have three mecha beasts in storage for transport, Jet carry velvet in a bride style, and he turn towards Y/n.
Jet: she mine now.
Ruby, rias, and rest of her friends cry for velvet taken away from them, izuku and jaune want to help her. But most pain is Y/n can't do nothing when atlas involves now he lose her forever.
Y/n: velvet I promise I well get you back!
Now how Y/n can get velvet back, and what secrets does three beast does connection with Y/n past?