Flashback

You were walking to the door that lead to the 2nd floor as you had just defeated Illfang, before you could make it to the next floor Kirito ran towards you

Being able to sense his energy and even hear his foot steps, you turned around and faced him

Y/N: Need something?

Kirito: Y/N, are you okay?

Kirito's question somewhat surprised you, you were expecting a question like, "Just what are you" or something like that

Y/N: I'm fine, thanks.

You turned around and walked towards the door but before you entered, you threw something away from behind you back, Kirito caught it before looking at you

Y/N: It's a calling crystal, it will work anytime, anywhere, if you're in life threatening danger and you need help, just use it and I'll be able to see your location, I'll be there within minutes...

With that you walked out the door, leaving Kirito and the rest of the players

Present Day
Current Status:
Level: 98
HP: +6,500,000
KP: +36,000,000
ST: +1,000,250,000
Skills Obtained:
- Super Saiyan 2
- Super Saiyan 3
- Super Saiyan 4

It's been about half a year since you defeated Illfang, and you've only gotten stronger, much stronger

You were currently walking around a little town of an 27th floor

You were looking for something to eat since you were a little hungry in game, after locating a small food stop, you got yourself some F/F and began to snack on some

???: Y-Y/N...?

You looked behind you to see none other Kirito as he wasn't alone, in fact you noticed a new little symbol by his name implying that he joined a guild

Y/N: Hey Kirito, you joined a guild I see...

Kirito: It's more of a team than a guild...

Y/N: Same difference...anyway, what have you been up to?

Kirito then looked behind him and looked to his "Team" carrying on in the distance

He then looked back to you with a rather embarrassed smile

Kirito: Well, I've just been helping these guys for a sometime now, The Moonlit Black Cats, how about you?

Y/N: I've been training a lot since the last time we met.

Kirito and his friends looked at your health bar and saw your level, all of them went wide eyed

Kirito: Woah...I guess...!

With that you turned around and began to walk away with a wave

Y/N: I gotta go, it was nice meeting you guys! Later!

With that you flew off and went to train like you always do

Time Skip

You were currently in the woods of the 27th floor, training against random enemies such as oversized praying mantises and wolves

You blasted your way through the woods in your base form as the explosions your Ki blasts caused could be seen from miles away

Despite all of the enemies you were killing, you were only getting a little bit closer to leveling up once

Y/N; Damn...These guys aren't strong enough to level me up anymore...

You were about to carry on with your little training session when you suddenly heard a beeping sound come from your left, you saw a red light flashing and Immediately knew that it was the Calling Crystal that you gave Kirito on the first floor

Wasting no time, you transformed into your Super Saiyan 2 form and rushed towards the direction that the light was coming from

Eventually it took you underground as you had to blast your way through to get under to a labyrinth

Eventually the red light guided you to a small door, you were about to burst your way in when the game's barrier of the room prevented you from getting through

Y/N: DAMMIT!!

You suddenly turned into your Super Saiyan 4 form, clearly not playing around anymore as you forced your hand through the walls, you forced your other hand through the wall as you blasted the door down

You struggled greatly as you began to open up the barrier of the game, everyone in the room looked at you in surprise, it was Kirito and his team of players

Y/N: C'mon!!!

Everyone immediately listened to you and ran out the door as you were suddenly pulled into the room

Kirito: Y/N!!

You rolled across the ground and quickly recovered to see what was waiting for you on the other side

Y/N: So you're the ones who almost killed my friends...well...

You suddenly punched a hole through one of the small enemies, instantly killing it as it bursted into small particles of glowing glass

You began to fight your way through the enemies with a series of punches and kicks as you began to get angry

Y/N: ...Whoever messes with my Friends...

Level Up: Level 100 Acquired!
HP: +7,000,000
KP: +40,000,000
ST: +1,000,500,000
Skills Obtained:
- Super Saiyan God

Suddenly a red aura bursted out of your body as your hair and eyes turned red as well, your body shedding a few pounds as you screamed

Y/N: ...WILL PAY THE PRICE!!

The sudden power up alone was enough to overwhelm all of the enemies in the room, killing them all

The rooms walls went back to their original colour as you walked towards the door and emerged from the room to meet with Kirito and the others

Kirito: Y/N! You're okay! Did your hair change...?

You nodded as you reverted back to base form and walked off

Y/N: Don't be so arrogant next time Kirito...something bad might happen...

With that he nodded as you sighed out of exhaustion

Y/N: I need a nap...

Meanwhile

The game master was in the air watching you fly back to the town in awe

Game master: He's become so strong that he can break the game...? I didn't expect this...well...if you're going to be this strong, might as well have some obstacles throughout your journey...

Suddenly the game master then raised his arm, causing 4 orbs of light to appear

Suddenly 3 entities emerged from the light, each being stronger than the last

Suddenly another entity emerged from the fourth orb, it was an exact replica of you, or at least that was what it seemed to be

Game Master: You are all considered boss characters, Now Go...

With that the four "Bosses", flew off into the world of Sword Art Online, ready to wreak havoc