[Misaka, Rebellion Assault, Mutatio]
"She's not my sister," Misaka said, rounding on Kuroko, "Stop saying misleading things like that!" But when she looked her old roommate was nowhere to be found.

[Kuroko, Rebellion Recon, Mutatio] 
Kuroko had gotten an alert from her phone to meet, so had teleported away without another word. The time for games was over, apparently. There was work to be done.

She waited silently while their apparent leader detailed their first mission. When she was done, Kuroko pulled a green arm band with a shield insignia out of her pocket and slipped it onto her left arm, securing it with a safety pin. "So all we have to do is go there and take these supplies without the Legion knowing about it? Sounds like an easy job to me."