Teacher vs Student

Querxes a woman who turned out to be a man and Kaneki's first Sensei challenged him to spar which Kaneki agreed to.

Kaneki: alright, but let's make things clear let's not use full strength and we're only allowed to use a few abilities.

Querxes: then what normal human or demon strength?

Kaneki: if you want you could use both.

Querxes: fine then, let's head to the gym we probably have enough space there, but let's go get permission first.

Kaneki: sure, lets go

Querxes: alright.

the student and teacher ran yo the gym after getting permission.

at the gym*

Kaneki: alright Sensei here's the gym it's perfect for our sparring session.

Querxes: yup, let's get started.

Kaneki: come at me!

their sparring session started but both of them were using the strength of demons.

Chikao: no way, they are actually sparring but with demonic strength.

to the student and teacher they were unknowingly being watched by the entire school.

???: no way Higanbana-kun is fighting an adult.

???: i can't believe that guy is fighting a woman!

Querxes and Kaneki noticed but they didn't care but Querxes took that comment personally.

Querxes: HEY I'M A GUY!

Kaneki: ignore them sensei let's gooo!

Kaneki on the other hand was focused on the battle and then he unsheathed Sword-san.

Kaneki: alright Sword-san let's do this!

Sword-san: [alright]

Kaneki started fighting seriously after pulling out Sword-san.

Querxes: I see then take this! Demon Manifestation!

Querxes is like Kaneki half human, half demon but he can separate from his demon self from his human self.

???: Haaah~ finally it's been so long since I've been freed.

Querxes: let's do this! Presxes!

Prexes: yeah, yeah whatever me. now come here let me shred you to mince meat MY DEAR STUDENT!

the two's fighting was so fast and intense everyone who watched couldn't believe Kaneki was actually fighting someone powerful.

Shino: is this... really Higanbana-kun?

Ryueki: no this isn't possible.

Natsuki: (so this is Kaneki when he is sparring he looks really cool)

Miku: (go get Uncle Querxes Oni-chan!)

Itsuki: Oi! Kaneki don't you dare lose!

Chikao: Go Kaneki!

everyone was making many comments and were even cheering him on but Kaneki didn't hear any of it and then.

Kaneki: Hahahahha! this is so much fun it's like playing at the arcade with my friends! so easy!

Querxes & Presxes: oh yeah? in that case take this!

Querxes & Presxes: Demonic Flames!

They sent out really hot blue flames at Kaneki.

Everyone who watched got scared.

Mitsuha: Higanbana-kun dodge! you'll get burned!

but Kaneki didn't dodge so he got hit. but

Kaneki: woo~ that was good it's been a while since I got cooked like that too bad I'm used to it!

Kaneki wasn't affected.

Kaneki: you know sensei you should remember one thing and that is that I'm used to being burnt alive!

Querxes: Heh! we're just getting started!

Presxes: Yeah! it ain't over yet!

Kaneki wasn't smiling the entire fight but then he smiled surprising everyone.

at the crowd*

Shino: (his smile is back!)

Yuuka: (I've never seen that smile in a long time)

Miku: (you can do it!)

Natsuki: (he's happy this is great!)

???: Woah i never knew he had a bright smile like that.

???: he kinda looks cool when he's smiling.

Keita: yeah you're right dude he looks badass.

at the battle*

Kaneki: alright then Sensei~ get close then~

Querxes & Presxes: in that case take this!

Querxes and his demon side released relentless punches with their unique fighting style.

Kaneki: Demon style huh? But you forgot something Sensei!

Querxes:!!!

Kaneki: You Taught me this style!

Kaneki also is a master of Demon style and dodged and countered every attack Querxes threw at him and then.

Kaneki: you're only using your fire abilities huh? you have many others but you limit yourself to one then... I'll do the Same!

Everyone: (what is he going to do?)

Kaneki: Tentacle arts, Kraken Style!

The battle has just begun.

Kaneki: come... at me... QUERXES SENSEI!

Kaneki released heavy attacks and countless Slashes from his tentacles that are hard as bedrock.

Querxes: Prexes go get-

Presxes: Gwak* man~ that was lame i couldn't even have fun.

Presxes got pierced in the head with the tentacles then.

*poof*

he disappeared into dust but Querxes didn't give up yet so he was about to attack but.

Querxes: alright Kaneki here i co-

Kaneki stopped moving and he lost his smile, his arms turned black and his eyes... were full of rage.