Y/n and his team are seen in the storage room and battling Isao ninja warriors as boxes were destroyed and sliced within the battle. Y/n kicked one ninja warrior away, crashing through and few boxes while two of them jump behind him but immediately Y/n blocks them with his sword and then cuts them down.

Then he dodges incoming explosion bombs that were thrown as Y/n leaps back and then fired his grappling hook and get onto the second floor and cuts them down while Asuka and the others girls were dodging and blocking the ninjas as best as they can.

Katsuragi punches a few while she dodges there attacks as she strike blows at them, sending them flying while she smirked to herself while she called out.

Katsuragi: (smirk) Now this is fun as hell!

Ikaruga: Keep going girls! We need to not let them overwhelm us.

Ikaruga cuts them down with her families sword while Yagyuu aids Nibari as she use her umbrella to block incoming ninja stars and then swings her umbrella at them, hitting at them as they fell unconscious.

Asuka rushed over and slide onto the floor as she blocked two blade strikes and then leap up in the air and then cuts them down. She smiled to herself and looked up to see Y/n taking on more Ninja warriors then they are as he quickly blocks their attacks and cutting them down and even throwing them off the second floor and crashing hard onto the ground.

Once the room was clear he land onto the ground as he slide his twin swords onto his back and regroup with Asuka and the others. They regroup and noticed a lot of weapons laying on the floor due to the boxes they have destroyed.

Katsuragi: Man look all of these weapons.

Ikaruga: This could be enough to take over Tokyo if they want.

Y/n: Yeah that's why we need to stop him for good.

He turn to leave but then Asuka asked him.

Asuka: Y/n......are you willing going to kill your father? It maybe a stupid question but.....are you sure your okay with this?

There was slince from Y/n and after a while he turn to Asuka and the others and tell them.

Y/n: I wished my father can be redeemed. I really wished that he can change his ways and be a father I wish to have but.........when I look into his eyes when he killed my mother, I see nothing but pure evil within him and no light within him. I've failed to kill him last time but this time....I will not fail again.

Asuka: If your sure about this.....then......no matter what your always be with us.

Hibari: (smile) Yeah we love you Y/n, always!

Yagyuu: (blush) Y-Yeah we do love you.

Ikaruga: I know what your going through Y/n. I too have a bad relationship with my brother remember? I understand how you are feeling about someone who is evil but deep down you still do care for him.

Katsuragi: (smirk) Still you have us right, so how's about we find him and kick his butt!

Y/n: (smirk) Right. Let's do this.

They node in agreement and soon they find the exit and they make their way through the hallway as they keep on walking and making their way to the throne room.

More ninja warriors appear to try to stop them but they xut them down and continue on walking. Soon there was a door in front of them so they open to reveal to what looks like a training arena as they step into the room and look around.

Katsuragi: This looks like a death arena then a training arena.

Y/n: Well my father think so as well. Let's just hope "he's" not here.

Ikaruga: Who?

Suddenly the door across from them burst open and a large ninja warrior wearing heavy armor all over of his body apoorches them and pulled out a massive sword which the blade crashed onto thr ground while the five girls were shocked.

Katsuragi: (shocked) Now that's a long sword.

Y/n: That's my father's champion warrior, no one has ever beaten him. They call him "The Ninja that doesn't die."

Asuka: (shocked) How can we beat him?!

Y/n: Best way to win is to run!

He throws smoke bomb that blinds the Ninja champion as they make q run through the other door but the Ninja champion chases after them. He burst through the door and chases after them while they run as fast as possible. They turn different corners, trying to outrun him but it doesn't seem to work and soon they reached a dead end.

Katsuragi: Great! Now what?!

Y/n: Cut through the ceiling!

He leaps up and cuts a hole within the ceiling which the girls follow and they cover up the hole just in time as the Ninja champion appear and look around only to see that they are gone.

They listen ad the ninja champion turns and make his leave as his footsteps is heard and slowly it fated away. They breath a sigh of relief and they get up and look around to what looks like a small museum like room as they look at everything that Isao had.

They looked at the swords he have taken from his victims, the statues that his followers made and even the skulls of his enemies within glass cases. Katsuragi is seen looking at a painting of Isao which she smirked and pulled out a black pen and draw Isao with a funny moustache, goofy eyes and words like "I smell" or "I'm a dumbass" around him. She chuckle while Y/n walked up to one painting of him and Y/n's mother standing in front of the throne as he stare at them while the rest walked over and spotted the women.

Katsuragi: (smirk) Well look at that cute face.

Hibari: (surprised) Whoa is she your mother Y/n?

Y/n: Yeah......Yes she is.

He stare at the painting for a bit and then he pulled out his sword and slice half of the painting and only cut his mother's painting as he roll it up and slide it onto hid pocket while he tell them.

Y/n: She deserves better then being in this place. She was the only person that show me the good of humanity and defended me from my father and she died as the result of it. She deserve to be remembered within my heart.....as for my father.

He pulled out a lighter as he enlights it and then sets the painting on fire while he finish off by saying.

Y/n: My father deserves to go to hell, and he's going there right now.

The girls agree but also a bit worry for him but either way they continue on as they head to the throne room to confront Y/n's father and end this for good.

(Meanwhile)

Homura's team, Gessen Squad and Team Hobijo were in tne middle of taking care of Isao's forces and holding them long enough for Y/n and his team to take down Isao and his rule.

Homura: Jeez how many of these jerks is there?

Mirai: Yeah there's like a lot of them!

Yumi: Either way we have to hold them back long enough for Y/n and the others to complete their mission.

Murasaki: (scared) I really wish I would be home right now.

Ryoubi: Damn it Murasaki don't be lazy and help us!

Ryouna: (smirk) Oh Ryoubi I love how your yelling at others, please yell at me!

Ryoubi: (anger) Just shut up okay!

We see Kiriya and Hanzo watching the battling happening on the cliff as Hanzo glance over to Kiriya and ask him.

Hanzo: So will you allow for Y/n to leave once he end his fathers rain?

Kiriya: Hmm?

Hanzo: The reason you brought him back to Japan so he can defeat his father and end the threat once and for all. So once he has fulfilled, will you let him go to wonder in the world or what are your ideas for him?

Kiriya: It's not my decision to make. It's his alone.

Hanzo: Still I'm worry what will he become once he ended his father. Either he'll come back to us to bring justice to those that are needed or will he become like his father. Don't give me wrong, I do like the boy I really do but he has his father's blood within him so what if.......

Kiriya: I know what you mean. But there is only one way to find out.

Hanzo agree and then we cut to Isao in his throne room as he waits and it wasn't long for his door burst open as his guard was throne into the room and Y/n and his team step inside as Y/n glare at him and then said.

Y/n: Hello father.

Isao stared at his son and his new friends and smirked follow by him saying.

Isao: (smirk) Son how nice to see you after all these years. Its good to see you along with your friends.

Ikaruga: Give up now Isao, it's over!

Isao: (smirk) Maybe but how's about we chat for a bit? I mean, it's good to chat.

Katsuragi: (smirk) Yeah right, why should we listen to you!?

Isao snap his finger and then two do guards appear while having Suzune tied up as they forced her onto her knees.

Asuka: (shocked) Suzune?!

Katsuragi: (shocked) No way! That can't be her?! She died a long time ago didn't she?

Isao: (smirk) She lived, ain't that right son? You found out that she was alive and you didn't tell anyone about it.

Asuka and the others girls turn to Y/n while Y/n felt deeply ashamed and explained.

Y/n: It wasn't my attention to keep it a secret, Suzune wants me to keep it a secret so she can blend in within the shadows.

Isao let's out a laughter as he stood up and then take a few steps forward while he said.

Isao: (smirk) You said you'll never be like me but I can see you have been keeping some secrets from your team?

Y/n: I'm not like you and I'll never be like you!

Isao: You've always been a disappointment ever since your mother brainwashed you to be good.

Y/n: She make me the person that will never do any harm! She made me a man that will never believe you!

Isao: And she died as the result of it and now here we are, at the end od the edge, son and father. You know I can just kill you all right here and now......but I want this ti be just me and my son.

Then he pulled out his sword and cut Suzune's rope as he grab her by the back of her hair and pushed her down the steps which she fell hard onto thr ground in front of Y/n.

He help her up while he looked up at Isao as he smirked while he said to Y/n.

Isao: (smirk) So how about it son? Let us dual for the final time and let's see who will stand and who will fall.

Y/n glare at him and then he gives Suzune to Asuka and the rest and tell them.

Y/n: Get out of here now, this is my fight.

Asuka: Y/n please let us help!

Y/n: No. I've kept secrets and lied to you all. I must proof to myself that I'm not like my father and never will be.

Ikaruga: Y/n you can't do this on your own! We can help, we can-!

Suddenly he pulled out his sword and cut the floor below them which opene to a hole and they all fell and crash onto thr ground. They look up as Y/n look do at them and turn away as the girls wished to help but the walls are impossible to leap or climb so they had no choice but to run.

The flames coming from the Museum room start to spread and smoke can be seen outside as the others girls see this in the distances. Then Y/n pulled out two swords and get into a battle position while he glare at Isao while he swings his sword and points the blade at Y/n.

Isao: Guess this is where you will die here and I'll make sure of that.

Y/n: I can say the same to you father.

The two looked at each other and then they charge towards each other and the two sword to clash blades at each other, sparks from their blades start to spark out and land onto the floor which catches fire as they continue to clash their swords at each other.

The two were slient as they continue to block their attacks, swinging at each other and leaping over each of their own blades as they continue their dual.

Soon the two enter a sword lock as they look at each other for what seems like half a second until Isao pushes Y/n back and the  kick him which cost him to fell through the hole that Asuka and the others fell through.

Isao walks over to the hole and looked around to see his throne room up in flames which he didn't care as he smirked and look down at the hole and then leap down as the flames continued to spread throughout the palace and many of Isao's ninja warriors start to escape the burning palace with their lives now.

Soon things start to fall apart as wooden pillars, tables and even wooden walls start to fall apart as the palace falls with the fate of Isao and Y/n unknown to those who are outside as Kiriya and the others hope that Y/n will make I out of the flames alive and they hope the same to Asuka and her team as well.

To be continued......................................