After Kaneki had transformed and became Demon Knight Omega Keizer, using the powers of Demon Knight Grand.
He summoned clones of previous Demon Knights and used them Ryueki, after a little while he decided to end him.
By opening the portal from inside his soul, Kaneki sent out the clones before they all became flames and combined to become Kaneki.
In a last ditch effort, Ryueki summoned his flesh familiars but his struggle was in vain.
Boom!
As Kaneki landed a powerful kick, Ryueki was destroyed and the world shook as if the world was split in two.
But at the very moment Kaneki kicked through Ryueki.
Tick! Tock! Tic-
Everything went gray as time had stopped.
Everyone's thoughts*
(H-huh? What happened? Why can't I move?)
Surprisingly despite time being stopped, the consciousness of everyone in the entire world was still active.
Natsuki'd thoughts*
(Everything is gray- didn't this also happened earlier when Kaneki nearly killed himself?)
Sachi's & Chikao's thoughts*
(Hey?! Hey?! Hey?! What's happening?! Why can't we move? What happened?)
Shino's thoughts*
(What's going on? After Kaneki destroyed Itadori-kun everything went gray and we're incapable of moving)
Yuuka's thoughts*
(What is going on? Wait... Did time stop?!)
Miku's thoughts*
(Onii-chan! What did you just do?!)
Everyone besides Yuuka was very confused and worried because the sudden pause of time was very scary.
But just then.
Kaneki: Boring.
Kaneki had spoke.
Kaneki: I'm still not satisfied.
Kaneki wasn't satisfied how Ryueki ended, he hasn't have enough fun yet.
So.
Kaneki: Reverse.
In his command.
Rewind~
Everything including himself began moving backwards.
Everything continued to move backwards in time up until the point where Kaneki just finished his transformation.
Ryueki: Haa~! Haa~! What?! D-Did I just get killed?! Me?!
Ryueki was in shock as he realized he was killed by Kaneki.
Higanbana girls: DID KANEKI/ONII-CHAN JUST TURNED BACK TIME?!
???: HE TURNED BAKC TIME?!
Everyone was also shocked as Kaneki has the ability to turn back time.
Ryueki: TCH! JUST WHO THE HELL ARE YOU?!
Kaneki was getting very tired with Ryueki's annoying voice.
Kaneki: I already told you, I am Demon Knight Omega Keizer, Higanbana Kane-
But as he was speaking he felt something wrong.
Kaneki: Why is my voice that of an old man?
His voice had changed.
Kaneki: Why do I sound like this?! I sound like a scary old guy villain!
He was very confused with the current situation.
Ku-kun: Kaneki!
Just then, Ku-kun came to him fully rested.
Kaneki: Hey Ku-kun! How are you? Good? Fully rested?
Kaneki immediately went to him to see if he was okay.
Ku-kun: Mhmm! I'm fully rested and also you look so cool Kaneki!
Kaneki: Really? I became one and all but I'm in my usual form.
Ku-kun: Eh? Kaneki you're not in your usual form.
Kaneki: What do you mean?
Ku-kun: Wait don't tell me.
Kaneki didn't know he had transformed into his Knight form.
Kaneki: What is it?
Ku-kun: wait I'll go get something. BLEURGHHHHH!
Splash!
Kaneki: Ku-kun?! What are you doing?!
Ku-kun suddenly started vomiting black goo again, surprising Kaneki and making him concerned.
Ku-kun: There wo go, just a moment.
Splash!
He then went inside through it.
Kaneki: is this Darkness travel? How did Ku-kun acquire it-
Splash!
Ku-kun then came out of the puddle of black goo alongside a mirror.
Ku-kun: take a good look of yourself!
As Kaneki looked in the mirror.
Kaneki: EEEEEEHHH?! That's me?!
Kaneki was completely surprised by his new form.
Kaneki: Eh? Eh?
He inspected his entire body, and then.
Hop! Hop!
Shake! Shake!
Kaneki: WHOAAAAAAA! THIS IS SO COOL! I BECAME THE DRAWING THEY GAVE TO ME!
He began jumping and and shaking his arms with joy as he realized he looked like the drawing the Higanbana girls made for him as a gift.
Kaneki: Hehehe~
He giggled with so much joy.
Although.
???: He really sounds off huh?
???: he's acting like a little kid but that voice is really off putting.
His voice that was similar to an old man is a was disturbing.
Kaneki: OKAY WHY IS MY VOICE LIKE THIS?!
Kaneki already gotten annoyed with his voice to he decided to fix it with his own hands.
Crack!
Kaneki: Haa~ alright let's see what the problem is.
Crack!
Wriggle~
Kaneki's helmet cracked open revealing his head, the armor around his arms opened up and his arms immediately changed into a tentacle with an eye at the end.
Shove!
He then shoved it straight into his throat.
Everyone: Huh?! What is he doing?!
Ku-kun: Kaneki what are you doing?!
Wriggle~
The scene was very disgusting as the wriggling of the tentacle was very visible.
"I'm just checking if there's something in my throat."
Ku-kun: Why?
"Something is messing with my voice, I gotta fix it- oh so that's the problem."
Chomp!
Gulp!
After finding the source of the problem, Kaneki disposed of the tentacle by eating it.
Ku-kun: That's disgusting Kaneki.
Kaneki: Sorry.
Ku-kun: So what's the problem?
Kaneki: apparently some bit of armor formed near my vocal cords which caused my voice to sound like this, well gotta remove it then.
Crack!
The armor on his arm regenerated and he then pointed his sharp claws at his throat.
Ku-kun: Kaneki wait! There's people watching!
Kaneki: Hmm? Oh yeah these drones are in here too.
Seeing that the drones are monitoring him, he hesitated for a moment before thinking of a work around.
Kaneki: I got it!
Burst!
He set his entire head on fire blocking the view.
Kaneki: alright this is going to hurt so much.
Crack!
Hee started operating on his throat, and very quickly.
Squish~
Clang!
He was able to remove the small piece of armor that formed in his throat.
Sizzle~!
Kaneki: Man that hurts! Phew~ my voice is back to normal.
Ku-kun: That's one huge piece of metal Kaneki.
Kaneki: Yeah Haa~ By the way. DID YOU SEE ME EARLIER?! I SUMMONED MOM, GRANDPA, GRANDMA AND GREAT AUNT! AND GRAND HERSELF! THAT WAS SO COOL!
Kaneki immediately went back to being excited after using his new powers.
Tohru: [Congrats Kaneki-chan, you're now a fully fledged Demon Knight, although you still need to get used to your new powers.]
Kaneki: Wait what are my new powers again?
Tohru: [Oh dear.]
"I'll be of your assistance!"
One of the drones then came closer to Kaneki and began speaking through the speaker and the voice belonged to the announcer known as Kori.
???: So the announcer is helping out huh?
???: That Itadori guy is no longer moving, what do you think will happen to him?
???: considering what Omega just said before rewinding time, he might use him as a toy.
???: Yikes.
The audience was watching and making a lot of comments about Ryueki.
Ryueki's thoughts*
(Damnit!)
"Hmm? Why does your voice sound familiar?"
"Do you want to learn what your powers is?"
Natsuki: Isn't the Announcer being very friendly towards Kaneki?
Sachi: Yeah, and she did help out with calming Kaneki down too.
Chikao: just who is this Kori girl?
In the Higanbana residence*
"I won't be talking with you three for a little, be right back"
Shino: what's the deal with this girl?
Miku: Yeah she seems to be very obsessed with Onii-chan.
Yuuka: just who is this girl?
While the Higanbana girls were wondering who this "Kori" person is.
Kaneki: Yes please, I have a lot of abilities and I wanna know what my newest one is.
Kaneki was about to find out what his new powers were.
"As of right now, you have the power of creation and a tiny bit of reality manipulation"
Kaneki: WHAT?! THAT'S BROKEN!
"Although your full power is incomplete, you are capable of bending reality but there are limits to it, as for creation that mostly depends on your imagination"
Kaneki: Whoa~ wait does that mean I could do anything I want?
"Correct"
Kaneki: ...
After hearing that answer, Kaneki had a realization.
Kaneki: TIME TO PLAY!
He got very excited and decided to go start playing.