It was a new day as You were currently outside watching Issei and Kiba train together as Kiba wielded a wooden stick for a weapon

Kiba: I won't go easy on you.

Issei: Neither am I! Boosted Gear Go!

BOOST

Rias: Good! Now again!

Issei: Go!

BOOST

Rias: You can do better!

Issei: More!

BOOST

You watched as Rias kept pushing Issei to boost his power, eventually Rias told him to stop once he boosted his power a total of 12 times

Rias: Alright Stop, Can you see how far you've come? You've never been able to endure this much power for this long in the past.

Issei stood there and stared at his boosted gear for a short moment as Rias continued to speak

Rias: The results in your training were abundantly clear just then.

Issei: Holy Crap!

Rias: Let's keep moving!

Issei: Boosted Gear!

EXPLOSION

Suddenky Issei began to Emit a small yellow aura from his body as he looked in awe

Asia: What's he doing?

Y/N: He's bringing out all of his energy and is gathering it into one massive blow...Kiba!

Regardless of you not being his master, Kiba rushed towards Issei at your command and got ready to attack Issei

He swung his stick as Issei blocked with his Gauntlet and forced him away by swinging his arm

Kiba landed in front of Issei as Rias spoke up

Rias: Okay Issei, Try using it all on him now!

Issei stuck his hand out to see that he only had a little particle of red energy in his palm

Issei: What?! That's all I have?!

Kiba rushed towards Issei once again as Rias continued to encourage Issei

Rias: Trust yourself!

Issei listening to his master's orders, thrusted his hand forward firing a large beam of red energy, Kiba dodged the beam and watched as it hit the nearby mountain and destroyed a portion of it

Y/N: That's it? Yamcha could probably destroy a mountain with Ease...

Issei stood there for a moment before falling to his knees, drained from his energy, Asia soon came to his aid and helped him up as you looked at the damage he caused

Rias: What do you think Y/N? Is Issei closer to your level of power now?

You didn't answer as you continued to look at the mountain

Issei: Not answering? Probably too scared...

You suddenly looked at Issei with glowing eyes as he had a comfy smirk in his face, you then turned back to the mountain and widened your eyes, causing the entire mountain to explode and reduce it to dust

Everyone looked in complete shock as you looked at the sky

Koneko: Destroyed the entire Mountain with a single glare...!

Y/N: Does that answer your question?

Kiba: How could you be so casual about this?!

Y/N: I can do stuff 10 times more destructive than this in my sleep...

Akeno: You must be bluffing...!

Y/N: Am I?

You suddenly snapped your fingers causing Beerus to appear beside you, he went wide eyed and looked around before noticing you

Beerus: L-Lord Y—

Before he could finish speaking you covered his mouth and whispered to him

Y/N: Don't call me lord, I haven't told anyone in this world who I am...Yet...

Beerus: I-I see...

You then back away from Beerus as he spoke up, loud and clear

Beerus: So what did you need Y/N?

Y/N: I'd like a quick sparring match, just to show these guys what I'm truly capable of.

Beerus: Yessir—I-I mean Y/N!

With that you leaped away a safe distance away from Beerus as he got into a fighting stance, you did the same as Rias and her Peerage gave you 100% of their attention

You suddenly appeared in front of Beerus with your arm reeled back, he quickly reeled his arm back as the two of you clashed fists resulting in a massive gust of wind

Suddenly the two of you began to move at high speeds as you exchanged blows with Beerus, each individual blow making a small shockwave burst

Kiba: Look at them go...!

Akeno: I've never seen such a battle...!

Koneko: This is a simple sparring match...?!

Suddenly the two of you disappeared as a bunch of shockwaves began to burst in the sky, eventually the two of you appeared on the ground as you began to dodge all of Beerus' attacks

Beerus dashed towards you as you leaped into the air and fired a large Ki blast at him

Beerus smacked the Ki blast away as you started to fire a volley of blasts towards Beerus who continued to deflect the blasts

Everyone watched in complete awe as Rias looked at the two of you in interest

You suddenly appeared behind Beerus as he quickly swung at you and actually managed to land a clean blow to your face, sending you flying back

You soon recovered and dashed towards Beerus as your fist smashed into his face, sending him flying as well

Beerus crashed into another mountain as it bursted into a bunch of little pieces, Beerus soon came flying out of the rubble and flew straight towards you

You did the same and bolted towards Beerus as the two of you clashed into one another, everyone looked to see with Beerus' fist in your hand as the two of you struggled to keep still

You then let go of Beerus as you landed on your feet and gave off your usual bored look once again

Y/N: Alright, that's enough, thank you for the sparring match, and tell Whis I sent my regards.

Beerus bowed in respect before you snapped your fingers, sending Beerus back to where he came from

Suddenly Kiba, Koneko, Akeno, and Asia ran up to you and began to bombard you with questions and compliments

Asia: Y/N! That was so cool!!

Akeno; You were both so fast!

Kiba: What was that ability of yours?! The energy blast!

Koneko: That fight was sweet!

Y/N: Thank you, but for now, I think we should get some rest, the Rating game is tomorrow is it not?

Rias: Yes, and Y/N, how would you like to join us in the rating game?

Y/N: I thought I was already participating...

Rias: Well then, even better, with you on our side we are sure to win!

With that you walked off to grab a bite since fighting a God Of Destruction helped you work up an appetite

As you walked away Rias looked at you in interest once more

Rias: I wonder if he'd like to become a member of my peerage?