There's someone else in the room who takes advantage of the situation

As Sasuko gloated over her victory over her rival, she didn't hear the noise of someone else in the room. This person had tailed Naruko because he'd seen their little altercation in the hot springs and when he saw Naruko tail Sasuko during her 'information gathering' and then now when she was going to Sasuko's room, he'd decided to follow her.

He was extremely lucky that stealth was his best skill, being a civilian that couldn't even graduate from the academy with them. He'd always had a crush on both of them and now he could have them, he though, making sure that Naruko and Sasuko didn't see or hear him.

When he'd seen what had happen to Naruko, he'd been incredibly turned on, and now that he knew it was the butt plug's doing and not Sasuko's jutsu, he made a plan to capture Sasuko using it.

As he thought about a way to take it from Sasuko and execute his plan without dying, he saw her put the butt plug and the sealing tag on her bed, which, was close to the window where he was hiding.

When she turned around, he gathered his courage and leaped at both items, managing to grab both before shoving the butt plug into Sasuko's asshole.

Sasuko didn't understand what was going on. One second she was about to get her **** on her rival, and the next, she was anally penetrated by the the same butt plug that started all of this.

As she fell to the floor in the same pose Naruko had previously been in, she felt someone applying seals on her back and stomach. The same one she'd use on Naruko she realized. She then felt the butt plug being taken out of her asshole and her body being placed in the same pose and Naruko.

Both Sasuko and Naruko saw their new captor, which they recognize as the nerdy kid from their class. He was one of those kid's who liked to read books instead of training. They also remember him being kind of a creep, always looking at them longingly.

Seeing the look of realization on their faces, he laugh, "Seems you remember me, it's been a while tho so I'll introduce myself if you forgot my name. I'm Jim and from now on, both of you are my pets!" He said, laughing to himself as both of the girls realized that there was nothing they could do to save themselves because of the seals that where placed on their bodies.

As they contemplated ways to escape their current situation, Jim looked around Sasuko's room for any sex toys he could find, and find he did. Butt plugs, dildos, vibrators and a plethora of other things.

He took two vibrating butt plugs and two vibrating dildos and made his way back to his two 'pets' who still hadn't found any ways to escape. He then proceeded to plug them both and activate the vibrators, watching them squirm as much as they could.

They didn't know it, or maybe even didn't believe it, but soon they would both be his obedient pets.