Crossover Costumes

Source

Costume Story

There is a party in the Bunker today. We are celebrating our great victory over the machine lifeforms.
We YoRHa are not allowed to have emotions, yet we are celebrating a victory? I find this very strange.
...Hmm? You need to speak with me, 9S?
You want to leave this boring, stupid party?
I agree. Let's go.