Friends in Strange Places (Sae)

Hazama retrieved the roll of duct tape he was looking for, and taped the vibrator to Sae's leg to hold it in place. There was a knock at the door, and Hazama went to answer.
"How goes it?" Furuhara whispered. Hazama stepped out to speak to her, closing the door.
"How is Aiko-kun?" Hazama asked simply.
"About that, I was gonna propose something. I bring Aiko into your room, and they can have fun together!" Furuhara replied. Hazama considered it for a moment.
"Can you move her easily?" Hazama asked.
"Yep."
"Bring her. I'm getting Sae-kun warmed up." Hazama said, before going back in.

Hazama pulled off her blindfold, letting his hands wander around her body for a moment before seating himself, waiting for Furuhara to bring Aiko in.

Hazama rose, walking over to Sae. He upped the power of the vibrator before sitting back down. Furuhara must have her hobbled somehow; why else would it take this long? She wasn't strong enough to physically carry Aiko anyhow.

The door opened, and Furuhara led Aiko in. Hazama watched them walk in. Aiko was naked, with her arms bound behind her back in a leather sleeve and legs secured together at the knees, with a short cord linking her ankles to allow her to walk. She was ballgagged and blindfolded, and had two small vibrators taped to her chest. Furuhara led Aiko to the bed, shoved her onto her stomach, and a moment later had her hogtied too. She removed Aiko's blindfold, and Aiko looked around for a moment, seeing Sae next to her.

Furuhara went into the drawers, pulling out a collar. Some more digging produced another collar and a nylon cord. She secured one collar around Aiko's neck, the other around Sae's, then looped the cord through the D-rings on both and drew it tight, pulling them close together.
"Some improvements..." Furuhara said, taking a moment to secure Sae's knees together, then taped a vibrator into place on Aiko. "There!"
"I'd prefer you didn't touch Sae, but it seems a bit late for that." Hazama commented.

Furuhara got a crop, but Hazama rose, stopping her. "No. Not on the first time."
"B-but..."
"NO."
Furuhara looked visibly dejected, then perked up again.
"Sae is off-limits." Hazama said. Furuhara walked over and swatted Aiko on the butt, eliciting a cry from Aiko. Hazama crouched in front of Sae, looking into her eyes for a moment.

"I hope you realize you are entirely under my control." Hazama said simply. "I can give you pleasure, and deny it just as easily. I am the master here."