Together?

Rean couldn't help but ask, "How can you control it?"

However, Timoteo just shook his head. "That's a business secret. If I tell you, won't I have to deal with competition in the future?"

Rean and the others had to admit that Timoteo was right. If it was them, they probably wouldn't share the method either.

Timoteo then took out several Soul Binding Contracts as he told them, "Everyone, gather here. I need you all to sign these contracts."

Naturally, everyone was taken aback by that. 

"You didn't say anything about a Soul Binding Contract."

"Indeed. We already paid you."

"What do you want?"