(Y/n) POV

It's been a week since Rias left me at the radiation source and I am meditating in the main temple chamber surrounded by a ring of magma. My mind then goes to Rias, her blood red hair, her ocean blue eyes, her cherry lipstick and her big- OH GOD, I'M TURNING INTO THE PERVERT! *zap to the head* OW! My meditating is interrupted by flashes of monsters rising from a portal deep beneath the ocean.

(Y/n): You saw that right?

Godzilla: Indeed, and I know what they are. These are alien colonists from another dimension. They biologically create giant monsters, humans refer to as Kaiju.

(Y/n): And judging by your tone they've been here before.

Godzilla: Yes, until the portal is closed, the Kaiju will keep coming until humanity is extinguished for good.

(Y/n): Can you sense anything that has already come through the portal?

Godzilla: Yes, there are two headed for Hong Kong right now.

(Y/n): Then let's kick some ass.

I get up and dive into the water and ride a vortex and it lands me close to Hong Kong. Immediately, I sense the two are close by and I can feel their radiated blood. I transform and wait for the Kaiju to come to me, suddenly a Kaiju with long body, a grasping tail and some sort of sac under it's chin and it's bottom jaw splits apart appears and smacks me in the side sending me through the water. I recover as the monster goes after me again, this time though I retaliate and use my claws to slash it it's chest and face. I'm calling this one Otachi, anyways, Otachi catches my next strike, I try slashing with my other hand but Otachi catches that too. I then just push Otachi hard through the water until we hit the sea bed and we both explode out of the water and I toss Otachi away. Just then the second one, I'm calling Leatherback, erupts from the water and jumps on my back and starts hammering away at my head and back, while Otachi bites me in the chest and side.

Rias POV

I am studying for a class and getting a strategy ready for our Rating Game against Astaroth, when Issei and Asia rush into the living room.

Rias: What's with you two?

Issei: Find the news channel!

Rias: What are you talking about?

Asia: There are three monsters duking it out just off shore of China!

I quickly turn on the TV and there is a news story running internationally out of Hong Kong.

News Reporter: At present, no one knows where these three titans came from or why their here. But it looks like two of the monsters are ganging up on the last one.

The camera pans to the fight in the bay and there indeed three jumbo sized monsters. The rest of my peerage walk in and watches, the one monster throws off one of the two ganging it and then punches the other and tosses it towards the other further away from the city it then lets out and earsplitting roar.

That roar sounded familiar but it couldn't be, right.

(Y/n) POV

Leatherback charges at me again and we clash, I slash it's face which causes it to reel back in pain, I then push it away. Otachi then pulls a fast one and sprays some sort of acid, which doesn't melt my scales but it burned, I try to go after Otachi when Leatherback then lets loose an electrical shockwave, which effected me a little and caused me to stumble a bit. Otachi takes the opportunity to head to the city, before I can give chase Leatherback charges at me and readies another electric blast. Leatherback swings an arm I manage to duck under and pin it while biting down on the electric generating organ and rip it off. I then lift Leatherback and throw it away several meters, it recovers and charges again and I charge up an atomic breath.

The Atomic Breath hits Leatherback dead on and puts a massive hole through it's chest, Leatherback then collapses in the water and I confirm it's dead by ripping off it's head. I then look to see where Otachi went and follow it's path of destruction, I find it tearing through buildings and roar it.

That got it's attention, Otachi charges and again I slash at it's face, it then uses it's tail like a mace and hits me in the stomach, making me stumble backwards. It starts running away, I give chase but it is much faster than me and I lose it.

Godzilla: Keep your eyes open.

When I come up to another building Otachi ambushes me and tackles me into another building, I easily get it off and I punch it's head twice. Otachi tries the acid spray again, this time I avoid it and grab the organ, I am about secure it's head with my other hand when Otachi's tail coils around my arm and tries to get at my head. I hold off the tail and am struggling to hold onto the Kaiju's tounge, Godzilla then pipes up.

Godzilla: Try an Atomic Pulse!

(Y/n): Too many innocent people. Maybe just light the irradiated fire on our back, it'll burn the tail.

My back starts to light up and the heat keeps rising and starts charring Otachi's tail. Eventually, I use my strength to snap the tail off and then secure Otachi's head and tear out the acid sac. It then surprises me by sprouting wings and trying to fly away, I try to grab it but I am too slow. I then try and aim while charging another Atomic Breath.

The Atomic Breath fires and hits the Kaiju in the wing and Otachi drops out of the sky. I make my way over to the Kaiju and grab it's head, it struggles desprately but it's too weak, I pry it's mouth open and fire another Atomic Breath into it's mouth and decapitate. As soon as it's body hits the ground, I let out one more roar in victory.

Rias POV

I am sitting smiling at (Y/n)'s progress and the fact that he won rather quickly.

Issei: Holy-

Akeno: Shit-

Issei: Exclamation mark!

(Y/n) POV

I then head back the ocean exactly the way I came in and grab Leatherback's body because....

Godzilla: The portal only allows the Kaiju pass through, so use one of their corpses to gain entry.

I dive back into the ocean still in monster form, dragging the Kaiju body, I then follow the source of the radiation disturbance and find the portal. I then ask...

(Y/n): What now?

Godzilla: Use the Kaiju's body to gain entry into the portal then use an Atomic Pulse to severe the dimensional connection.

I do as Godzilla suggests and head through the portal, I stop halfway down and decide to use the Pulse here. I start charging up, my back starts to light up and radiation is becoming concentrated. I then release said energy in a massive explosion.

I start swimming back through the portal as it had started collapsing. I get through the portal and watch it to make sure it stays closed.

Godzilla: Well done young one.

(Y/n): Hmph, lightweights.

With that I head back to the temple to recharge and keep training.

(A/N): Hey guys sorry for the wait I was debating which monster should be your first opponent. Hope you enjoyed and have a great rest of your day. Don't forget to like and follow so you don't miss any content from me. PEACE OUT!!!