Auditorium
You and the others had been sitting around watching everyone else do the SCP survival  event for a while now, eventually everyone had their turn and it was over

Grand Priest: And that concludes our third event, our fourth event, The Royal Rumble, shall begin in a few hours, until then, most of you are free to roam the ship and do as you please.

With that everyone began to get up and leave the room, however they were brought to a halt when The Grand Priest spoke up once again

Grand Priest: However, I would like the original 36 students who first came to the academy, to make their way to the main deck, there's something there for you.

Ashido: The main deck...?

Ruby: What could he possibly have for us there...?

Y/N: Could he anything, the guy literally decided to get us a cruise ship at the last second...

Ruby: ...Good point...

Time Skip: Main Deck

You and the other original 35 students were now arriving at the Main Deck, but there was nothing there, leaving a lot of the students scratching their heads

Midoriya: There's nothing here...

Ruby: Maybe we got here a little too fast...?

Y/N: For The Grand Priest...? Yeah right...

All of a sudden a large green light began to glow, catching everyone by surprise as The Grand Priest appeared next to you

Grand Priest: You're all in for quite a shock.

Everyone besides you covered their eyes as someone could be seen emerging from the light, along with 3 other silhouettes, 3 turned to 12, 12 turned to 24, 24 turned to 36

Y/N: Wait a second...

At that moment the first silhouette to emerge stepped up, revealing himself making everyone go wide eyed

Everyone: EEH?!?

Everyone: It's Y/N!!

Y/N: That's me?!

Grand Priest: As you can see, I have brought all of you from the past, from when you all first joined the academy, once this is over they'll lose their memory of this event, Enjoy!

With that The Grand Priest flew off as a sweat drop went down your face, everyone looking at their past selves as you walked up to the past version of yourself

Y/N: So...You're me from the past...

Past Y/N: And you're me from the future?

A dead silence filled the air as everyone was suddenly growing nervous from the tension, suddenly the two of you spoke up

Both: Damn, I got taller...

Everyone: That was so close...!!

At that point everyone began to talk amongst themselves, telling each other about their futures or pasts

Past Midoriya: So how have you been handling one for all...?

Midoriya: Things have actually gone pretty well, I'm able to use 100% of full cowling with ease now! And Y/N taught me a technique that really helps me adapt to my Quirk!

Past Midoriya: Wow! Really...?! He really is amazing!!

Past Ruby: Did you improve at all as a huntress?!

Ruby: Y-Yeah, I've gained a lot more experience! Not much in strength though...

Past Issei: So did we become Harem King yet?!

Issei: Nah...*Points to you*...He did though, to be honest I don't really care about being Harem King anymore, Y/N opened my eyes, we already have Rias, and I really appreciate her!

Past Issei's eyes were beyond widened as he looked at you and glared with rage and jealousy

Past Issei: So not only is he a dick here too...but he RUINED my dream?!

Meanwhile Yang was talking with past Yang who was pretty eager to have a specific question answered

Past Yang: Had Y/N become your boyfriend yet?!

Yang: Yep, he has been for a few months now!

Past Yang: REALLY?!

Past Blake: Has our team improved at all...?

Blake: Yeah, due to Y/N training yang, she's gotten much stronger, Ruby's somewhat matured as a huntress, Weiss has slowly opened herself up more, and we managed to improve in our social skills.

Past Y/N: Have we gotten any stronger?

Y/N: Yeah...! Leagues above what you could ever imagine to achieve!!

Past Y/N: Seriously...?!

You suddenly heard the sound of a foot stomp behind you as a voice called out to you with an angry tone

???: HEY!

You suddenly looked behind you to see Past Issei glaring you down, with present Issei watching in the distance with a face palm

Y/N: Woah...Deja Vu...

Past Issei: You ruined my Dream of becoming Harem King!! I'M GONNA PROVE MYSELF RIGHT NOW!!

BOOST

Past Issei suddenly activated his Boosted Gear as you leaned over to your past self, whispering to him

Y/N: Yeah...You'll have to put up with this guy for a while...but eventually he'll smarten up...sooner or later...

Past Issei: Hey!! Don't ignore me!!

With that Past Issei began to charge towards you as you began to walk towards him, only one thing on your mind

Y/N:

Past Issei suddenly reeled his fist back and shot it forward, his fist smashed into you as you didn't even budge

Y/N: Should I start training for the Royal Rumble soon...? Maybe not...it's only in a few hours...

Past Uraraka: Hey Look! Issei's attacking Future Y/N!

Bakugo: This is so twisted...

Issei: Stop day dreaming and take me seriously!!

Y/N: Huh?

You suddenly shoved Past Issei away with one hand, normally this wouldn't do much but it caused Issei to go flying back until Past Koneko caught him

Past Rias: Issei!!

Past Ruby: Does this happen a lot in the future...?

Yang: Yep...

Past Rias: I'd appreciate it if you didn't attack my servants...

Y/N: He attacked me first though...but I'd you're gonna be like that, come at me!

Past Rias: You know what to do...

BOOST

Suddenly Past Koneko, Kiba, and Akeno rushes into action as Past Issei ran towards you as well, Past Issei and Past Koneko throwing a bunch of punches at you as you dodged without a single trace of effort

Y/N: Dang...you guys are slow...

You suddenly ducked and avoided an incoming slash from Kiba as you spread your arms out, blowing everyone away as a large bolt of lighting as suddenly sent hurling towards you

You simply stood still and took the lightning bolt as it didn't effect you in the slightest

Y/N: *Sigh*...I've become too strong...

You suddenly let out a loud scream, destroying the lightning and blowing Past Akeno away, meanwhile the present versions of your friends were either laughing or face palming

Issei: Dammit...! BALANCE BREAKER!!

Past Issei suddenly emitted a set of red armor from his body which now had him completely covered and "Protected", as he rushed towards you with his fist reeled back

Issei: TAKE THIS JACK-OFF!!

Issei suddenly shot his fist forward as it smashed right into your face, but you once again didn't even dodge

Y/N: Also Déjà Vu!

Issei: DAMMIT—

You suddenly interrupted Past Issei with a flick to the forehead which not only sent his helmet flying off, but you sent him flying back as he went flying past the cruise ship and landing into the water

Y/N: W-WHOOPS...!! I didn't think I'd hit him that hard...!!

Past Rias: ISSEI!!

With that Past Rias suddenly spread her wings out and flew off the ship to retrieve her pawn, meanwhile you looked at all the other members of her peerage while glaring

Y/N: Anyone else want a turn?

Past Kiba: N-Nope I'm good!

Past Koneko: I don't wanna die today...

Past Akeno: I-I'd have to agree...!

Y/N: Yeah, I thought so...

Past Y/N suddenly came running towards you as you could see the look of excitement in his face from a mile away

Past Y/N: Man! I've become a badass!!

Y/N: Damn right I have!

Past Y/N: Man! Now I wanna fight you!

Y/N: You sure...? You've seen how strong I've become...

Past Y/N: Yeah! This is a good opportunity for me to recognize any flaws I might have!

Y/N: Well then...let us begin...

With that you leaped away from your past self and began to levitate in the air, looking to see him flying up into the air as well

Y/N: So, considering you haven't spent too much time at the academy yet, I'm assuming you'll come at me using Super Saiyan Blue Evolution with Kaioken?

Past Y/N: Heh, you got me there!

Past Y/N suddenly gained a large blue aura, turning into Super Saiyan Blue evolution while adding Kaioken on top of it

Y/N: Alright, now let's do this!

Past Y/N: You're not going to power up...?

You suddenly put your hand in front of you and shook your head before speaking up

Y/N: Nah, there's no need...

Past Y/N: Well...Whatever you say...

With that, Past Y/N dashed towards you as everyone watched in awe, Past Y/N throwing the first punch to which you simply caught with ease

Y/N: That all...?

Past Y/N suddenly began to unleash a barrage of swift punches? All to which you dodged and blocked with ease

Past Blake: I honestly didn't expect this from the Future Y/N.

Past Yang: Yeah! He's my future boyfriend after all!

Past Blake: Wait What?!

Past Y/N didn't let up on his assault as you kept blocking and dodging, your past self growing a little aggravated as he suddenly formed an orb of Ki in his hand

Past Y/N: Stop defending and attack me!!

Past Y/N was about to go in for a blast when you suddenly kicked the blast away with your arms crossed, leaving the blast to explode in the ocean

Your past self looked back to you to see you right in his face, time seemed to slow down as you reeled your fist back

Y/N: You've asked for it...

You suddenly threw your first punch which would end up being the last form your fight, your fist connecting perfectly and whacking Past Y/N in the face and sending him hurling down to crash into a wall

DESTRUCTIVE FINISH!!

Both Jaune's: Holy Shoot!!

Past Kirishima: Y/N'S BEEN HOLDING THIS MUCH STRENGTH FROM US?!?!

Kirishima: It's not like that, Y/N's trained super hard to get where he is right now!

Y/N: Yep! That's pretty much it!

You suddenly descended to the floor, landing on your feet and walking over to your past self who was in a crater in the wall

Past Y/N: Ugh...Man...! You really got me good with that one...!!

Y/N: Hehehe! Yeah, some might say that I've gotten too strong for my own good!

You suddenly picked him up as both Asia's ran over to the two of you and activated their Twilight healing on Past Y/N

Asia: Please be more careful, Y/N, you only hit him once and look at his condition...!

The Grand Priest suddenly appeared next to you and looked around to see the damage you had caused

Grand Priest: As much as I've enjoyed watching this, it's time that I sent you all back to your original timeline.

Past Yang suddenly clung to your arm and refused to let go as you simply chuckled

Past Yang: NOO!! I DON'T WANNA!!

The Grand Priest suddenly raised his arms as each past student was suddenly warped back to their own timeline, meanwhile all of you simply laughed at what had just happened

Grand Priest: So how was it?

Y/N: I'm pretty sure I just created a new timeline by one tapping myself...

Grand Priest: How so?

Y/N: With how much damage Past me took with that one punch, he'll probably gain a Zenkai Boost and be stronger than he should be...

Grand Priest: There's no need to worry, of that is the case then it shall go down it's own path, anyway, In about 30 minutes or so we shall go and commence the Royal Rumble, and here's something you probably didn't know, five of the 30 participants are strangers we haven't met.

Y/N: Oh? But Why five? seems like an odd amount for this kind of things...

Grand Priest: Because if we just placed participants from here, it would be more than obvious who would win.

Y/N: Hehehe! Yeah...I guess you have a point...

Grand Priest: Please prepare yourself for this event, there might be someone there who could pack an extra punch.

With that you laughed and walked away, meanwhile a certain Saiyan who claimed to be your brother was watching from afar

???: Hmph...a fighting event...might as well make my entrance there...

With that the Saiyan flew away and disappeared into the horizon in an instant, this next event was really going to be something