While the other were facing Resetsu Yumi arrive at her location to fight Fubuki

Yumi: come out Fubuki you want me here so I'm right here
Fubuki: glad you can make it I'm so glad you figured out my plan I'll give you credit for it
Yumi: Cut the crap I knew I shouldn't trust you when you was at your name house
Fubuki: and you were too stupid to even know about that
Yumi: I should have put you down right then and there but this time you won't be escaping my wraith I'll be sure to see you dead by my hands so I can determine if you should live or die, hope one of those choices will sink in your head
Fubuki: I don't care about that since we are here there is no escaping this battle
Yumi brings out her fans
Yumi: prepare yourself sister this battle will be long and I wonder who will go  down first
Fubuki: shut that mouth of yours get ready for battle

(Fubuki Boss Battle) Begin
Yumi and Fubuki charge at each other with there fans clash at the same time while looking at each other
Yumi: I will defeat you after this plan of yours is over you have gone too far
Fubuki: I will not lose by the likes of you
As they continue to the clash with there fans yumi wins the clash and does one of her own attacks on Fubuki while sending her into the air with aerial rave
Yumi: I'm not done yet let's see if you can take this one as well
Yumi( secret ninja art: ice pillar Fan)yumi dance around with both fans outward while a medium ice tornado dealing damage to Fubuki while sending her flying to a tree, yumi: spin
Yumi: that must have  hurt real good
Fubuki: "covered in injuries decide to not give up, shut up you got lucky there
Fubuki decides she will transform to her Yoma form.

Fubuki(Yoma Form): Fubuki gains red streak marks across her face and body that resembles kabuki makeup while in her shinobi clothes
Fubuki: let's see if you can survive against me in this form
Yumi: come and try it
With various amount of attacks that Fubuki sent at yumi, she kept dodging each and every one of them
Fubuki: stay still
Fubuki kept going until she felt tired
Yumi: seems you feel a bit tired let's see if you can take one more attack
Yumi(Secret ninja art: Black Ice) yumi brings both of her fans in a circle while creating a huge ice shard then shoots it towards Fubuki the ice shard did  so much damage that it reverses Fubuki Yoma form back to her regular form Fubuki still standing with severe injuries
Fubuki: this cant be
Yumi: since you can't move I got one more transformation and this will be your end
A huge ice tornado evolves yumi into her ice Queen form

Yumi: ice Queen transformation complete, embrace your end sister
Yumi creates a ice sword in her hands and skates towards Fubuki while slashing her one time Then returns back to her with one final slash that defeats Fubuki once and for fall while she falls on her back into the snow while looking at the sky
Fubuki defeated
Ice Queen Yumi is the winner of the battle

Normal POV
Fubuki: this cant be I lost to my sister, how can this be
Ice Queen Yumi approach her sister with her ice sword in her hand and plunged the sword in her sister stomach
Fubuki screams as the sword pierced through her
Ice Queen yumi: does it hurt
Fubuki doesn't say anything
Ice Queen Yumi push the sword down with more force as Fubuki couldn't take the pain
Ice Queen Yumi: I said does it hurt
Fubuki: it hurts please stop it
Ice Queen Yumi: nope let's see if you can take another one
She makes another sword and plunge it in her stomach again next to the first one
Fubuki starts coughing blood
Yumi: I'm surprise you can survive 2 more
But this last one will be your fate
Fubuki: but why would you do this to me
Yumi: shut up I don't wanna hear another word from you
Ice Queen Yumi makes one last ice sword and is ready to pierce Fubuki neck
Fubuki looks at it as her fate is ready to end her
Ice Queen Yumi: Goodbye Fubuki
Yumi sends the sword down to her sister neck but was stop by y/n as he grab her arm at the last second
Y/N: calm down Yumi she had enough of the pain she received
Yumi: y/n what are you doing here can't you see I was about to kill my sister
Y/n: I know that but she can't suffer more on what she did,but we defeated her caregiver without killing her as she has been sealed away
Ice Queen Yumi: I do not want to see her face you got real lucky before I had the chance to finish her
Yumi looks at the bloody injure body of Fubuki
Yumi: you lost fair and square sister, you are very lucky that he got here or I would have killed you and bury your body where it will never be found but I won't do that since you're my sister, if you want me to accept an apology from you, it better be a dam good one
Yumi walks away from her battle satisfied
Y/n: I feel real bad for you that you had to suffer this torture of yours from her so you can say it was justified to her
Fubuki looks at y/n
Y/n: let me heal you back to normal from your near death injuries
It took about 20 minutes to fix Fubuki back to normal
Fubuki: thank you for this
Y/n: no problem and your companions are here
Senko & Gekko: Fubuki thank goodness you're alive we felt real scared that you was going to die by your sister
Fubuki: I know
Y/n: now that I'm here I'm giving you this small bottle since your caregiver is in the bottle sealed and safe
Y/n gives the small bottle to Fubuki
Y/n: you need to wait at least a month to take the cork out and she will be released from her prison  can you do that for me
Fubuki starts crying
Fubuki: thank you so much I'll do it
Y/N: now you 3 better go before Yumi returns to finish all 3 of you
Senko: let's go
Fubuki & Gekko and Senko leave the area to walk another path
Y/n: good luck

Y/N uses instant transmission to return back to the group
10 minutes later
Y/N is back
Adult Asuka: what happen while you was over there
Y/N: Yumi was about to kill her sister but I manage to grab her arm before the killing blow can connect, I see she already went back to her team and is in her normal form
Asuka: oh lord good thing she didn't die
Yagyū: did you give the bottle to her
Y/N: yes I did and I told her to wait a month till she can release the cork from Resetsu prison
Homura: that's real nice of you
Y/n walks to yozakura
Y/n: yozakura please take care of Yumi and with all the stuff that she did to her sister she is going to need all the help your team can give her
Yozakura: we are definitely going to do that
Asuka: good please help her at all cost
Katsuragi: thank you
Stacy: what should we do now mom
Adult Asuka: let's all head home with our mission accomplished on defeating those 2 we deserve a long rest,
Y/N: let's go everyone

(Chapter end) that was a really good fight scene only 1 chapter left to go and this whole story is finish thank you for sticking around to the end of my story