3rd person Pov

Y/n walked towards the arena where Riser stood. After he reached near Riser a Vision of a woman's face appeared in mid air.

???: You wouldn't be able to beat my brother.

Riser:She's right you know it was foolish to try and fight me.

Y/n looked at Rias who was watching them spoke.

Y/n: Rias don't worry.....I got this.

Someone announced the fight to begin then Y/n Flashstepped towards Riser then cut off his arm. Riser looked at his arm  then growled.

Riser: You scum how could you cut me?!

Y/n: I'm surprise you can still stand there and call me names, guess your as strong as you are ugly.

Riser  fired a blast at Y/n who jumped out of the way and into the air. Riser jumped after him then tried to punch Y/n only for him to block it with the flat side of Zangetsu. Y/n pushed Riser back then swung at Riser with a blast causing Riser to shoot Hell fire at him.

Riser: Take this!

As the blast collided Y/n charged through it then  grabbed Riser by the face then threw him to the ground. Riser stood back up then Y/n charged towards him causing Riser to shot another blast towards him. Y/n dodged the blast then Riser ran towards him with a punch sending Y/n back. Riser then fired a barrage of fire at Y/n soon engulfing him with a explosion. The ORC looked in horror at what happened then Riser began to laughed.

Riser: THIS IS WHAT HAPPENS WHEN YOU DARE ATTACK THE PHENEX HOUSEHOLD!!

As the dust began to clear Y/n's voice echoed through it.

Y/n: Is that all you have Riser? Because if so I don't have anything to worry about.

Y/n smirked then Riser looked at him with anger.

Riser:Just what are you?!

Y/n: I'm just a substitute Soul Reaper who hates people who hurt his friends. I'm gonna tell you now that at the end of this you're gonna have payed for what your peerage did to Rias's peerage.

Riser charged up a massive blast then sent it at Y/n. Y/n charged up his energy then swung it at the blast.

Y/n: Gestsuga Tenshou!

As the blast collided Y/n's blast overpowered Risers then engulfed the devil Riser fell to the ground with a great many injuries .  Y/n  stood Ready to attack when suddenly the ground around them shook. 

Y/n:What the hell?

A explosion could be seen from away then a Giant Hollow appeared above them.

Y/n: What is a hollow that big doing here?!

Riser: How did it break free?!

Y/n turned to Riser then remembered what Kisuke said.

Y/n: So is this your work then Riser?

Riser: Riser had found these "Hollows" as you call them wondering around Hell so I had some captured. I thought that if we could learn more about them then perhaps the devils could use there power to help our race.But that one kept eating the others until Riser had no other choice but to try and seal it away. Who the hell could have set it free?

???: That would be us.

https://youtu.be/GBTtnfYS-Ws

(Play this here)

Y/n:Who the hell are you?

Shuren : I am Shuren and this is Kokuto.

Riser: Riser recognizes those chains.  Your sinners aren't you?

Kokuto: So what if we are?

Y/n: Just how  the hell are you here?

Shuren: None of that matters to us now die!

Shuren fired a flame arrow at Y/n causing him to flashstep out of the way. After he did the boy was greeted by a sword swing from Kokuto. Y/n blocked the strike then saw as the hollow fired a blast towards everyone. Y/n jumped towards it then used a bakudo to block it. Kokuto charged at Y/n but then he was quickly knocked away by Isabella in her balance breaker.

Isabella: You go deal with that monster i'll handle this douche!

Y/n: You sure Isabella?

Isabella: Yeah I got this.

Y/n:Alright but be careful ok?

Isabella nodded then Y/n flew towards the Hollow as black energy surrounded him.

Y/n: BANKAI !!!!

Y/n yelled transforming then sent a wave of spirit energy at the beast. The hollow let out a roar then fired a blast at Y/n.

Y/n: Bakudo #81: Danku

As the blast slammed towards Y/n a invisible barrier blocked the blast. Meanwhile Riser and Isabella stood dealing with the Sinners. Isabella charged up energy then fired a blast at Kokuto.

Isabella: DRAGON SHOT!!

Kokuto  took the brunt of the attack then revealed with his bandages off his face.

Kokuto: That attack was impressive but no where near enough.

Isabella: Dammit I'm not done yet!

Isabella flew at Kokuto with a punch as he used his chains to block her attack. Riser shot a blast at Shuren who stood smirking as he fired arrows to block each attack.

Shuren: Come now is this all the mighty son of the Phenex family can do?

Riser: You cocky bastard!

Riser growled then Shuren flew at Riser then blasted him at pointblank sending him back. Isabella looked in shock when suddenly Rukia appeared infront of her.

Isabella: Wait your that chick from our class what are you doing here?

Rukia: We can talk about that later but lets handle these guys first.

Kokuto: Do you honestly think you stand a chance against us?

Shuren: Lets take care of them!

Y/n looked down then to see them then cursed.

Y/n: Damn I have to find a way to take this thing down and help them. Looks like this is gonna be harder then I thought.

To be continued