BDSM

It was obvious that Aoi had a crush on Makoto. Even before joining Aoi's tutoring session, it was obvious. The tutored only confirmed the idea and showed how far Aoi was willing to go for her crush.

A normal person would've left Aoi alone or secretly try to nudge the two together so they could finally doubt. Junko wasn't even close to normal. She wanted to push Aoi past her limits, to watch her go further into despair as she humiliates herself infront of her crush and others. It was why she manipulated the others into joining her and Makoto in Aoi's tutoring session.

As everyone sat down, Junko took a quick look around and noticed some toys and rope under the bed. As soon as Aoi asked what they should learn, Junko knew what to say. "BDSM! The teacher mentioned that kinks are a thing and the last quiz had a lot of questions about them and bdsm. I got so many of the questions wrong though.

Aoi blushed as she nodded her head, "I-I guess we could talk about that. BDSM is where you-"

"No, no no. We're all visual learners. Didn't you say you were going to help Makoto visually? Or were you only planning on doing that when it was just the two of you? You didn't have any ulterior motives for only inviting Makoto for something like that, did you?" Junko asked with a smirk.

"O-Of course not, I-"

"Perfect! Then put this on!" Junko said as she pulled a gag out from under Aoi's bed. It was an open ring gag. One that would keep her mouth open and let others see inside. Aoi hesitated as she glanced at the gag, Makoto, then Junko. "What's the hold up? You're here to teach Makoto, right? Nothing else?"

Aoi finally realized that Junko knew the truth, but there wasn't anything she could do about it. She wasn't ready to confess to Makoto and it was just a gag... It'd be embarrassing to wear, but confessing her love would be worse... With a sigh, she slipped it on.

"Perfect~ Now, just one last thing and I can take over teaching. It's a bit tough to speak with a gag on afterall," Junko smirked. Before Aoi even had time to react, her hands were pulled behind her back and handcuffed. Junko then pulled a dildo out from under the bed and waved it infront of everyone.

"I guess our ultimate swimmer here, likes to have some fun at night~ You know, sex toys were also part of several quizzes so far... And since this is your dildo, and you offered to help teach us, I think it's only fair that you show us how it's supposed to be used~"