Artist - Ecru https://twitter.com/mybff_s2?lang=en
Picture edit by Sonic1991
Source - https://danbooru.donmai.us/posts/2763776
Picture edit by Sonic1991
Source - https://danbooru.donmai.us/posts/2763776
While in the nearby town Neo was raiding shops for dust to help Cinder and Yang saw that she had henchmen so she started to beat them up with Neo watching, After Yang had dealt with them she charged at Neo who grined and Yang had hit an illusion, What was that said Yang.
She looked around to see Neo in the streets taunting her, You might have beaten me last time but I will win this time she started runing at Neo and was trying to hit her but Neo either dodged with hardly any effort or just blocked with her parsoul.
Yang got more annoyed that she could not hit Neo, Neo was getting bored of this fight and made an illusion which Yang hit, God damn it said Yang where is she?, Nearby she saw Ruby, What are you doing here? asked Yang, Ruby walked up to Yang but instead of an answer she got sprayed with knockout gas, Neo removed her disguise and got her henchmen to carry Yang.
When Yang woke up she was in a hideout and strapped to a chair, Neo walked up to her smiled and strapped herself in the chair next to yang, The henchman put helmets on both of them and activated the machine which swapped their bodies.
When Yang woke up she tried to say something but no sound came out then she looked down to see she was wearing Neo's clothes oh no thought Yang I'm in her body, This feels much better said Neo walking up to Yang, With your body not only can I finally speak but I can easily infiltrate beacon academy and we still have our Semblances watch, She transformed into Ruby hey sis how are you doing? then she transformed into Weiss and then into Blake.
Yang looked in shock and best part is with a voice my disguises are perfect said Neo, Cinder walked into the room, Well done Neo with this plan nothing can stop us, Thank you replied Neo.
And with this swap Cinder's team had won and team Rwby had lost with Neo assassinating anyone who got in their way and Cinder getting all four maiden powers.
Weiss: Yang was messing around with my dust which caused the swap.
Yang: I'm sorry please swap us back.
Weiss: I would love to but I don't know how long this will last. It could take a few days or it could take months or years.
Yang: This is not fair. I don't know how to fight as you or how your dust works.
Weiss: You should of thought about that when you was doing then we would not be in this mess.
Ruby: Oh great now Weiss is my sister.
Weiss: Now that I am I can teach you some manners Ruby and this won't look out of place seeing as I am now in your sisters body.
Yang: This so humiliating I have small boobs and Nobody except Ruby likes me. Plus I feel weak. I hate these clothes and boots.
Weiss: Well I feel better about having a bigger chest and I will enjoy evey moment of this. So while this was a accident it is a happy one to me.
Ruby: Just kill me now,
Hope you like this story this ways fun to write.
https://rwby.fandom.com/wiki/Yang_Xiao_Long
https://rwby.fandom.com/wiki/Weiss_Schnee
Source - https://vignette.wikia.nocookie.net/rwby/images/5/50/V2_06_00006.png/revision/latest?cb=20140904232950
Yang: I don't know what happened. But with me in your body I could try your sythe and speed in combat.
Ruby: Well at least I feel a lot stronger now and have a big chest now so thats cool. But I'm not used to fist combat.
Yang: So I guess we should train in our new bodies till we swap back okay?
Ruby: Okay Yang it just won't feel the same without my sythe but lets go.
Hope you like the story.
Source - https://vignette.wikia.nocookie.net/rwby/images/e/ee/Yang_Vol_5_Short00002.png/revision/latest?cb=20171014171530