(a/n): is the new title ok?
Y/n POV
Team RWBY had returned to Mistral and arrived to Haven academy.
This will cause some problems to my original plan to join Haven as a student to gain information but for now, I have enough information and learnt the source of the corruption in the academy. I will eliminate that pathetic coward when the time is right, maybe I don't even have to eliminate him before him because his Mistress will because of his incompetence.
For some reason, many people had went to the Colosseum and it's getting really annoying because none of them can survive one single backstab and put up a decent fight. They just keep coming out of nowhere, spy on the Colosseum then die.
Meanwhile at Salem's castle
Salem: why are all of these people so weak? Every time I send someone to that colosseum they never come back! I need to train my forces better and maybe get the coward to send his students there. Now to investigate this Undead Legion who killed my favorite mercenary and to begin the next phase.
Back with y/n
'Can one of you stay behind and guard this place?'
(Sure but why? We're sure that the clones of you and the Abysswalker can defend themselves)
'I just don't want people coming here and finding out something that they're not supposed to'
(Fine)
I then teleported using the Abyss back to Mistral and infiltrated Haven once more.

Timeskip
In the headmaster's office, Salem was talking to Lionheart about the Colosseum and his incompetence. Lionheart had already sent students to investigate and I was once again hiding on the supports near the roof.
Salem: Are you sure that nobody is in the room with you?
Lionheart: Yes Mistress.
Salem: Then why is there a cape on the supports?
'Shit, my cape must've moved a bit into the light.'
Lionheart then looks up and sees me.
Lionheart"Who are you and what do you want?"
I jump down, seeing no point in hiding anymore.
Lionheart:"Ah, so you're with us." Obviously seeing the corruption on my armor.
Salem:"No he isn't."
Lionheart:"Wait, he isn't?"
Lionheart then took out his weapon while I just lean on a wall, checking my scroll for contracts to kill Lionheart. Turns out there were several contracts requesting to kill him. Lionheart then takes out a disc shaped weapon, by this time, the seer grim had already disappeared.
Lionheart used his weapon to shoot fire dust at me, I dodged the attack but my cape did not. I look at my cape then look back at Lionheart.

I then light my sword on fire and charge towards Lionheart, however at this time, team RWBY and team JNR burst into the room.
Yang: "What's going on here?"
Both Lionheart and I stop fighting to stare at her.
Lionheart then puts on a very unconvincing act of how I attacked him and talked about how he is not the fighter he was but knowing the intelligence of team RWBY they are going to believe him. I also know the encounter between the clone and team RWBY.
Ruby:"We must help the headmaster, y/n had turned evil!"
They then get into fighting stances as I summon two watchers to fight with me. However, a portal opens in the middle of the room. Raven, Vernal, Cinder, Mercury and Emerald step out of it, Lionheart immediately rushes to their side and goes behind them.
Yang:"Mom? What are you doing here?"
Cinder:"Raven is a new ally of ours, however, Lionheart had been our ally for a long time. The school is surrounded by the White Fang, surrender while you still can."
I then decide since the 'good' side has suffered more damage recently, I should kill members of the evil side. I then jump out of the window along with the other watchers then do a front flip and land while standing upright, making dust blow around us. We then do our salute at the same time with the sword pointed towards the army of White Fang surrounding the base. I then dash forward and did a wide horizontal slash, cutting white fang members in two and making their intestines fall onto the ground and spray blood onto the other members, the other watchers followed my movements to make the enemy think that they will copy my moves.
Adam:"What are you waiting for? Shoot them!"
We then jump up high to evade the bullets and slam our swords into the ground, creating dust clouds and splitting some White Fang in half. Blood then sprayed all over the place and onto me.
'This will be hard to clean and I still need to repair my cape.'
I then raise my sword and let the bullets ricochet off of my sword into other white fang members, causing blood to spray over other white fang members and my comrades. Luckily for me, it started raining and a large sound of thunder could be heard. The clouds then part ways as the Nameless King flew down on his stormdrake and incinerated some White Fang. I was now confused as I didn't ring any sort of bell nor try to summon him so why did he come.
My answer soon came as the Nameless King told the White Fang to shut the fuck up, hit them with a large lightning spear and flew away. However, even with the minor help of the Nameless King, there were still tons of White Fang left. If they manage to push me into my second stage, I might have to summon someone to help me deal with this army of White Fang but right now I should focus on the battle.
Ruby POV
Y/n jumpes out of the window after Cinder's little speech.
Cinder:"Seems like your friend has abandoned you."
I ignore her and tell everyone to get ready to fight. Jaune then rushed towards Cinder to avenge Pyrrha Nikos but Cinder easily neutralize his attack and kicked him away. Weiss then decided that she should be the one to take Cinder on and attacked her, but Cinder parried her attack and slashed her shoulder, at this point, everyone was fighting in the room. Lots of gun fire was then heard from outside.
Cinder:"Seems like your friend is getting pummeled."
A loud thunder can then be heard and a loud roar followed. We turn to see that a person riding a giant dragon is murdering White Fang. He then left and for some reason, the members of the white fang all switch to melee weapons.