Y/n was over a volcanic region, one of the prongs on the mark on the back of his right hand was glowing red as it guided him to the location of a zeroth dragon.

"Alright Overlord, what do we have this time?"

"This time, we have the zeroth dragon of the inferno, Drachma, it was considered the most powerful among all Zeroth Dragons, at the cost of difficulty to control. As Gyze dominated all lands of Cray, Drachma had destroyed nearly half of the continent. Drachma was finally outmatched by a warrior, whose dual swords were referred to as "Swords of Apocalypse" and passed onto of the later generations."

"One of them being you..."

"Correct partner, the other was named Dragonic Descendant, but before i get too far into memory lane, we'll need a strategy to weaken Drachma enough to seal him away."

"I guess fire is useless, as is brute force...."

Y/n thought for a while before summoning Overlord's sword of Apocalypse, and when he reached the Volcano where he soon saw a large Red glowing symbol on the ground, raising from it was the Zeroth dragon.

Using speed, he used the blade to slash at its scales. This was mainly to draw its attention so it's rampage won't trigger a volcanic eruption, using the slashes from sword of Apocalypse to draw out unwanted memories of its defeat and sealing.

And it worked, Drachma felt the strikes one of the blades that once defeated it and began to chase after Y/n as he flew away. Y/n led the zeroth dragon to some pitfall traps he made earlier, and while this would no real damage to it, they would at least stagger the beast.

Fortunately for Y/n, it worked as Drachma staggered when one of its feet sunk into the ground. Y/n, who has been boosting as he flew, all but turned into a green colored comet that crashed against Drachma in a hit and run tactic, and due to his size compared to the dragon, Drachma is having a hard time hitting Y/n back.

Y/n created bindings made of darkness magic before tossing them, binding Drachma's eyes and mouth, disorientating it as it tried to remove the bindings.

Y/n gathered as much natural magic as he can currently handle before focusing a concentrated blast of it at Drachma's face, knocking it back a few steps.

 Y/n saw the symbol appearing on the back of his right hand. Knowing what to do, holding out his hand, Drachma became red particles before being absorbed into palm, once Drachma was fully absorbed, Y/n saw one of the prongs glowing red along with the original green and purple before the symbol faded away

Y/n heard the mental grumbling of Drachma, obviously sour about its lost but it doesn't seem to be causing a massive fuss. Focusing, he created a large volcano area in his mind to create a home for Drachma, which wasn't too hard as he and Overlord was from the same nation

Neptune: Wow, kind of anticlimactic

Neptune?! Again? 

Neptune: Yuppers, and it's not just me

Kevin: Yo

Oh come on! I can barely handle one of you! Now your both here?! Don't you have a girlfriend to go back to Kevin?

Kevin: 2B can wait for a bit, she is.........

2B: KEVIN!!!!!!!!!!!!!!

Kevin: Coming dear! *He leaves*

Glad he's under control, one down one to go *I press a button bellow my desk*

Historie: NEPTUNE!

Neptune: EK! I gotta go! *She leaves*

Before you comment, yes, Kevin is dating 2B from Automata, now back to the story before i need to fix the wall again

When he got back, he saw the ORC cleaning the school pool, and according to Rias, in Exchange for the ORC, they'll be the first to use it after it was cleaned. But Y/n was ordered by Rias to take a break as he was already tired after having to deal with a zeroth dragon.

As Y/n relax at the poolside, the dragon in his head oddly talked about the power systems of anime and games, such as devil fruits, haki, ki, and even the elemental powers of a vision from teyvat.

 Though they agree that devil fruits are the most impractical power system, unless you have clear knowledge of what power the fruit gives you, you're playing russian roulette with your ability to swim, as the power could be powerful.... or it could be useless such as turning into a human jacket, hell no.

As Y/n saw the pool is filled and ready to use, he summoned his own peerage so they can to enjoy the pool. But Y/n went to look for Xenovia who was missing, he found her at the changing room, she was unsure on how to wear her swimsuit properly as she never went swimming before nor was she interested in any recreational activities.

She suddenly asked Y/n something that caused him to choke on his own breath, would he make a baby with her, because she wants to give birth to strong children, and for that, she'll need a strong father.

And with how much Y/n has done despite not being a devil for more than a few months, he was a clear choice. But Y/n, always the voice of reason, pumped the breaks on that thought. But he can tell his words didn't fully sink in and he'll be hearing more of this in the future

A few hours later, Rias and the other girls heard of Xenovia's desire and was pissed but was glad Y/n has a good head on his shoulders by pumping the breaks on the idea.

Soon, Sirzechs and Grayfia appeared. And after exchanging a few words, Sirzechs revealed that he was there for two reasons, one was open house, much to Rias and Mio's horror as it means they'll be embarrassed to no end, they tried to protest saying he should be too busy as a satan, but he told them that the second reason was on business as the leaders of all 3 factions will have a meeting in kuoh due to the Major events that happened here.

 Sirzechs also mentioning that permission is granted to release Rias's other bishop, which Rias told them that he had a power so strong, he cannot control it, so he was sealed within his room.

Rias gave Y/n a look of hope as she remembered he has Dialga as a familiar, which was the answer to a problem her other bishop 

As the preparations for the unsealing was on its way, Y/n could only wonder what the future holds.

Done and done, next time Y/n and the others will see the other bishop and Y/n might obtain a power from another anime/ game, which power will it be? Read to find out. If you have an idea of your own, tell me in the comments bellow.