You are Kusajishi Riku, Captain of the Seireitei Court Guard's Ninth Division, and you've begun to wonder how strange Ichigo and Tatsuki's classmates really are.
One of them, the blonde one with the enormous chest who seemed to be an old friend of Tatsuki's, seems to have an ability that exceeds what any human should be able to do: controlling space and time to “reverse” events. Her memories were restored somehow after being blocked by the Onmitsu at your request, meant as a safeguard for the students caught in the hollow attack where Tatsuki first awakened her abilities, and she's just reversed the injuries Ishida and Sado incurred in their brief fight with Muramasa. There's really no telling at this point what her ability may or may not be capable of achieving.
You sense a battle is brewing between Byakuya and an unfamiliar shinigami, which must be the senior Kuchiki freed by Muramasa. Other shinigami are arriving as well, and you can feel the world around you strain from the force of dozens if not hundreds of hollows pushing through the dangai to converge on the battlefield.
“Those powers,” Tenkotsuki mutters. “What she is doing defies the limits set for mere mortals. How is such a thing even possible?”
“I don't know,” you frown, “but as soon as Muramasa's dead I think we need to find out.”
“Hm?” the strange girl with the impossible ability looks at you in blissful ignorance. “Are you talking to me?”
“No,” you shake your head.
“She appears to be reversing changes in 'pattern', in the physical sense,” Tenkotsuki posits quietly, “essentially reverting an object to a previous state. I do not know how, nor do I know how closely Sado's current state mirrors his original state. Regardless, I believe that she is not an individual who should be left alone.”
>1/2