He puts the mask on the body.

There's a visible shimmer in the air, translucent lines forming a terrible visage - grey skin like an old corpse, white hair, white horns, white robe, grinning face, withered hand clutching a straight knife. Sasuke makes a deeply complicated expression, before his face goes blank.

Silent, he drags his knife across the body's stomach.

A gash appears on the apparently-a-death-god's stomach, and five blue balls of light rush out, rapidly dissipating. One, though, hovers before Sasuke. The body stops breathing, faster than the wound should have killed it.

Cam observes from a few paces back.

He eyes the hovering ball of light a bit warily, then says, "I could use the second body and Tobirama's genetic material now."

Vial of bone marrow, second body same as the first one.

He unfurls the scroll he'd brought, which has a lot of really intricate flowing symbols, places the bone marrow at a certain point, and then presses bone-marrow-and-scroll combination to the body's forehead.

The body is rapidly covered in dust and ash, reshaping into an adult man. The glowing blob in front of Sasuke settles down into the body.

And Senju Tobirama opens his eyes.

"Hi."

"You've summoned me, without any controls," he observes, rising smoothly to his feet. "Why? An Uchiha, and a non-human..."

" - I wanted your help. With. A thing," Sasuke says, tongue tripping over itself. Argh. Why now, brain. (Maybe he's a bit burned out.)

He tilts his head. "Care to elaborate?"

"There's a supervillain who needs to go down and Sasuke here wanted you on board with that. Also it's great to know that resurrection works!"

"This feels still like Orochimaru's version of my technique. Did you find a solution for the sacrifice problem?"

"Oh, yeah, I can create mindless live human bodies."

He pauses. "That has fascinating implications. Who is this 'supervillain' you wish for my aid against?"

"Orochimaru. Sounds like you're acquainted."

"He twisted my technique and used me and my brother to try to destroy the village we built. I am not fond."

He turns to regard Sasuke. "What do you wish to do with him?"

"Stop him from hurting people. My plan was to try to bribe him. I - know how his mind works. What he wants. If that fails, kill him."

"I would want to be consulted in specifics. But that seems acceptable."

"I'm very equipped to do bribery."

"What do you plan to bribe him with?"

"I believe Sasuke said 'massive library'. If more mindless bodies to play with wouldn't be a security risk I can do that too."

"I suspect he could do just as much damage with a large enough library as with his own experiments. But I don't know him well enough to say."

"I'd rather resolve this without bloodshed."

"Sensible. And I am amenable to monitoring him, assuming you do not wish to dismiss me once the task is finished."

He shakes his head. "I was - hoping this would be. Permanent."