*BOOM* *BOOM* *BOOM*

Bakugo continues to face the twin serpents, some of his grenades in a column to collapse it onto them. Like how Sylvia questioned Arachnid for teaming up with Humarise. He demanded to know why the twin joined the cult. Only to be annoyed to learn that they were trying to save themselves...

Balugo: You Damn Villains! DIE!!!

Twins: HAHAHAHAHA!

*BOOM* *BOOM* *BOOM*

Bakugo: Small Fry Don't Get It. I can't stand it!!!

*BOOM*

Unfortunately for him, the Serpenters use Trigger to break out of the rubble, gaining more speed, agility, and blades.

Twins: HAHAHAHAHA!!!

Bakugo: You've turned into real crazies!!!

They start to slice and dice Katsuki mercilessly while dodging his Explosions. 

Bakugo starts to struggle against the Serpenters but keeps on pushing until he manages to trick them by grabbing both of their blades and then slamming them against the cavern wall to immobilize their movement.

Twins: SHIT!!!

While bleeding rapidly, Bakugo smirked with an maniacal grin at them.

Bakugo:....Shut Up! I GOT YOU NOW!!!

Now that the Serpenters are trapped, Katsuki fires both his to blast them and then goes all out to defeat the Serpenters with his Ultimate Move...

Bakugo: HOWITZER IMPACT!!! DIE!!!!!!

Twins: FUCK!!!

*BOOOOOOOOOM*

After the force of the impact had defeated the twins, Bakugo emerged victorious.

Bakugo: That's what you idiots get...Ha...I won...

Before he collapses from blood loss...

~Meanwhile~

*CRASH*

Deku: DETROIT SMASH!!!

Mikoto: SNOW TORNADO!!!!

Meanwhile, Izuku and Mikoto have successfully broken through Humarise's defenses. Suddenly to their annoyance, more agents kept coming.

Agent #1: YOU'RE NOT GOING ANYWHERE!!!

Agent #2: Not on our watch!

Mikoto: Shit...here we go again!

Haru: You guys go on ahead! We'll take them down!

Deku: Todoroki...Mitsuo-kun...

Shouto: We'll be fine. Just go!

Mikoto: You guys better make it out when it this is all over!

Haru: Same goes for both of you! I'll create an opening!

Haru created an golden mist to distract the agents as he and Shoto stays behind to hold off the incoming reinforcements. 

Agent #1: Fuck! I can't see!

Shouto: You're wide open...

Thanks to Haru's distraction! Shouto defeats them, but suddenly he comes to face against a giant behemoth Quirk user known as Leviathan. 

Haru: Todoroki!

Shouto: Careful Mitsuo...This one is dangerous...

Leviathan: RAAAAAAAH!!!

Shouto uses his quirk to stop him, but the villain is impervious to any of his attacks because of his Quirk, and being on Trigger. Haru tried to use wild card to boost up powerful lighting attacks but thanks to Leviathan's trigger, the attacks were somehow proven futile as he suddenly sent flying back by Leviathan's power.

Shouto: Mitsuo!

Leviathan then appeared in front of Shouto, trapping him.

Leviathan overpowers Shoto and smashes him into the underground river, where he uses his Quirk to control the flow of the water to drown Shoto, leaving him no room to escape.

Shouto: (Is he rotating his quirk around himself to control the water?! I'm losing consciousness!)

Fortunately for Shoto, he notices that the underground river leads him to the waterfall outside.

Shouto: (Make it in time!!!)

Giving him the opportunity to escape Leviathan's grasp and freeze the waterfall, trapping the villain before striking him with glaciers of ice.

Leviathan: GRRRRR!!!

Despite such a powerful attack, Leviathan breaks free by controlling the flow of fire too, burning Shoto under the extreme heat of the fire. 

Shouto: AHHH?!

Leviathan: ROAAAAAAAR!!!

Shouto: FLASHFREEZE HEATWAVE!!!

While being trapped by Leviathan, Shouto concentrates on his left side and uses the flow of the fire to defeat Leviathan using his Ultimate Move.

Shouto: Flashfire Fist! Jet Kindling!

Leviathan: AHHHHHHHHHHHHHHH!!!!

Shouto: (Midoriya...Yukimura...Make sure you beat them...)

....Before he and the villain fall down the waterfall.

Haru: No! Todoroki!!!

Before he could try and save Shouto, a ink form of a ability shot at him causing him to be thrown back before he gained his composure and looked at the person who dared striked him.

Agent: Now it's your turn...

It was another quirk user appeared. Another man with a ink like ability. His body turns into ink as he tried to surround Haru.

The ink leaps at Haru and blasted multiple attacks at him. Haru evades them all but it soon gets captured into more ink. He tried using his Quirk but the ink stops the Wild Card preventing all the attacks from activating. 

Ink Agent: Give up already. You will be soon consumed by my ink!

Haru: Never!

Haru tried to struggle out of the grip of the ink monster but was proven futile. He couldn't copy nor use any abilities.

The ink starts to tries and pull him inside to make him suffocate. Then the ink started to go into his mouth straight through his lungs.

Haru: Afgsht?!! (Can't breathe..!)

Ink Agent: Struggle all you want...you're going to die anyway.

Haru: (No....I. WILL. NOT!)

Haru quickly morphs a card and uses this agility: Flash to blind the ink agent.

Ink Agent: AHHHHHHHHH!!!

Haru: I am not giving up. Not now! Not ever!!!

Haru then remembered he still had Mikoto's quirk Engage and he used it to amplify his quirks to max. A bright light surrounds him. Before using his ultimate move.

Ink Agent: W-What is this?! 

Haru: Wild Card...BOOSTER PACK!!!

Then multiple cards appeared Haru shining like diamonds before they all striked the ink agent. The ink monster tried to dodge the attacks before shapeshifting and letting his body be formed into ink.

However, he begin to use too much and begin to feel weaker with each card from Haru begin to pulverize him!!!

Ink Agent: Gaaaah! Fuck you little bastard!!!

Haru: *Overpowered* WHOOOOOOOOA!!!

Haru's attacks got more powerful by the second as the ink agent couldn't take it anymore. Each card had hit every point in his body that couldn't even be able to shapeshift back into his original form leaving him at the mercy of Haru.

Haru then used golden mist followed by a card that imprisoned people rendering the ink monster to become trapped inside.

After the powerful fight. Haru's cards all disappeared except for the one that had the ink agent inside. Haru glared daggers at the villain who stared back.

Haru: There's no where to run...the authorities will deal with you later...

He then collapsed onto the spot, utterly exhausted from overuse of his quirk.

Haru: (Yukimura...Midoriya...it's up to you guys now...)

~Meanwhile~

Now that the two heroes is left inside the Humarise base, Izuku & Mikoto reaches the main hub and encounters Flect Turn himself....

Deku: You must be Flect Turn...

Flect: I see you all have managed to beat my humarise agents. I can give you both credit for that. But no matter....It won't be able to stop my plans...

Mikoto:...Why are you doing all this?

Deku: I agree...the Quirk Singularity Doomsday Theory... is just a mere unproven belief.

Mikoto: That's right...your actions on quirks are just biased on your fear and paranoia. 

Flect Turn remained undeterred as he looked at them in a calm demeanor.

Flect Turn: Quirks will evolve to the point where they become destructive and incapable of control, creating a mass extinction level event that will bring the end of humanity.

Mikoto: We get that already...But that doesn't give you the right to kill people...! Your crazy plan won't work!

Deku and Mikoto begin to power up.

Deku: Let's take him down Miichan!

Mikoto: Right behind you!

Flect: Your endless futile end here, heroes...

With that, the final fight against Humarise begins...