She agrees to the addendum, but...

*Author's note: Finally managed to get my ComfyUI setup working and fine tuned enough to get close to what I am looking for. Still not quite right, but for an idea of the characters in this scene, I'll post what I'm using as image inspiration. If it works, I have other images I am working on as well to track clothing and physical changes, if y'all are interested in seeing the inspiration photos. Apologies for the pop-up ad with the link, I followed the instructions from the CHYOA image posting and the only one I could find that wouldn't censor it or be annoying to deal with was imgbox.*

"Sir, what about...?" Hanae couldn't bring herself to ask the question.

"Going to the bathroom? Don't worry, there are little holes in front, and the rear has a round hole large enough for allowing passage in or out." Professor Thorndike pointed them out to her in turn. "Plus, this is from the oni, so the batteries never run out and it is self cleaning."

Hanae felt a weird sense of relief as she learned something new: Professor Thorndike knew about the oni. "Sir, may I inquire as to what time and where I will meet you to remove the belt at night?"

Professor Thorndike's phone beeped and he looked down. "Oh, you're delaying putting this on, which counts as an attempt to get out of your addendum to the contract. So, make a choice: Heads or Tails?"

Hanae blinked. "I-I'm sorry Sir, heads or tails? As in to flip a coin?"

"That's all I'm allowed to say." Professor Thorndike said.

"Umm...Tails? Sir, I choose Tails...so." Hanae trailed off.

A smile broke through his face. "I was interested to see if you'd choose that one. So, here is your next set of choices: Big, Medium, Small." Professor Thorndike waited for her answer.

"M-Medium, Sir." Hanae chose. She fidgeted a little, the carpet rough on her knees and her hands.

"And lastly: Cat, Fox, Dog, Rabbit, or Monkey?" Professor Thorndike stepped behind her, bent down and reaching between her legs, parted her labia, and pushed the protrusion on the chastity belt inside.

Gasping at the intrusion and freezing as the belt broke through the initial barrier and kept going, and going, and going, Hanae trembled. So full! And ow! "S-Sir, I choose neko...cat. Sir! May I ask how much is left to go?"

"Don't worry, you're at the halfway point." Pushing a little button on the belt, Professor Thorndike waited for the vibrations to start before he went further. After her gasp and stiffened back, he pushed the rest of the way in, watching her toes curl. "See? Not so bad."

Professor Thorndike slipped the deceptively dainty, thin, rounded metal portions over her hips and tightened it around her waist until it clicked. He shifted it around a little and then tightened it until he could barely get two fingers between the metal and her skin and then clicked another button. The thunk told them both it was locked.

"S-S-Sir? May I beg for the vibrator to be turned off?" Hanae asked, her voice strained.

"Not yet, you'll need it for this next bit." Professor Thorndike went to his desk again and reached into the drawer. This time he pulled out a fluffy, 10" long tail that was the exact color of Hanae's hair. It also was attached to something shiny and metal that was thin and vaguely aerodynamic at the end, flared quickly into a cylinder about an inch and a half in diameter before narrowing to half an inch before flaring out again to a slice of the cylinder at the same diameter as before. The tail was attached to the flat section on the other side of this slice.

Hanae stared at it for a long moment before it finally clicked what it was. Unconsciously, she started to back away from the new item.

"Are you refusing the addendum to the contract?" Professor Thorndike looked delighted.

Hanae stopped moving and hung her head, shaking it back and forth. "No, Sir." She said quietly. "Sir, I must have misunderstood. I thought when I agreed to the belt that it would be temporary until I decided to wear less clothing? Did I misunderstand your addendum?"

Professor Thorndike shook his head. "Are you asking for clarification and understanding of your contractual obligations?"

"No Sir! Sorry Sir! Please excuse me. No clarification needed." Hanae really wanted to know but not enough to get herself into yet another contract to figure it out.

Professor Thorndike moved behind her again and with the help of some of her self produced lubricant from her legs where it was running down from the belt, in combination with a generous helping of normal body lube, he guided the tip through the round hole in the rear of the chastity belt.

Hanae felt the cold metal touch the skin there and she tightened up unintentionally. "Ahh." She tried to suppress the moan as the feelings from the vibrations intensified when she tightened up. She kept herself in place rigidly, willing herself not to move. The small bore front protrusion wasn't left alone for long as flare out started. She felt an intense need to expel the intruder and thus instinctively tried pushing back on it with her muscles. That had an unintended side effect in that the intruder was suddenly able to slide most of the way in before the muscles grew too tight to continue.

Professor Thorndike kicked up the vibrations significantly and the sudden increase surprised her, allowing him to push the plug the rest of the way in a swift quick movement and she felt a click resound through her butt signifying it had locked in place.

Hanae tried lunging forward to get away from the sudden intense pressure. "Ahh! Too full Sir!" Hanae gasped. She desperately and instinctively tried to shove the belt off but that was not possible, and then tried pulling the plug out but it would not come out either. Panting, Hanae slowly stopped pulling at the tail and then sat back on her heels, trying to preserve some modesty.

"This plug is special. You never need to take it out because it has energy utilization whereby it consumes waste products and produces energy. Also it has some neat little features that I particularly enjoy including this one: low grade electrical shocks if more than 5% of the tail is covered by fabric." At the last, Professor Thorndike smiled. "I'm afraid the skirt you wore here is too long, you're likely going to need to find something shorter."

Hanae stayed quiet, worried that if she said anything she'd break down and start asking for more negotiation even knowing the consequences. "Y-Yes, Sir. S-Sir, now that the t-tail is... is in me, m-may I request the vibrations to be turned offfff?" She gasped the last out, fighting to keep her composure.

"Hmm. What will you offer me?" Professor Thorndike asked.

"S-Sir?" Hanae asked, her eyes searching his for a hint.

Professor Thorndike said: "I'm doing something nice for you, if you want me to stop doing something nice for you, don't you think you should do something for me?"

"W-what would you like, S-Sir?" Hanae asked. She instinctively backed toward the chair.

Professor Thorndike frowned: "I asked you."


Realizing what he was asking for and not wanting to give that, Hanae realized she could either live with the vibrations, or she would need to offer something else he obviously enjoyed. "S-Sir, if you turn the vibrations off, I'll agree to a ten percent increase in your political capital."

Professor Thorndike smiled so widely Hanae immediately realized her error and added: "T-tomorrow only. Only for tomorrow. Ten percent increase for tomorrow, Sir."

A ding from his phone announced something. Professor Thorndike looked down and said: "I'll do you one better, agree to five percent extra every day I don't use the dildo vibrator and you've got a deal."

Hanae breathed a slight sigh of relief and nodded hesitantly, the vibrations sending a tremor through her: "A-agreed, Sir."

"Excellent!" He tapped a button on his phone and the vibrations from the dildo finally stopped and Hanae finally relaxed. But then he tapped two more buttons and she jerked as vibrations started on her clit from the front of the belt and in her butt from the plug.

"Hnnh! Sir! Why?" Hanae asked. She squirmed and froze with her hand just at the edge of her butt, her other arm crossing over her breasts as she flushed and breathed hard.

"I get just as much fun this way. It doesn't bother me if the vibrations are from a different source. Besides, I only agreed to no vibrations for the dildo." Professor Thorndike said.

Hanaes' eyes shot open from their half lidded state in time to watch him tap another button and felt the dildo rapidly thrust up before wiggling and then pressing forward hard before withdrawing back down. "Oof! Sir! I'm too sensitiiiaaiiive there!" Her left arm shot down from covering her breasts and she pressed against the front of the belt vainly trying to push down the sensations. Unfortunately for her, the belt was an inanimate object and mute pleas had no effect on its' implacable collection of integrated circuits, motor drivers, and resistors.

"You should have fun in class then. Dismissed, Hanae." Professor Thorndike turned back to his desk and sat down and pulled out some papers. Looking up after a few seconds, "You're still here?"

"S-Sorry, Sir. I'm l-leaving now." Hanae desperately wanted to say something else, but it was clear it wouldn't help. So she crawled forward to him, stood and gave him a kiss, turned and knelt back down and crawled towards the door. Getting to the door, she reached up and prepared to open it. "Sir? May I request my clothes back from the clothes drawer?"

"I never agreed to that part. And that wasn't in the stipulations you agreed to either."

Hanae could hear the grin in his voice. Her shoulders slumped, she hung her head and turned slowly to crawl back next to the desk, squat, and pull her hands back up into a finger lock behind the head. "S-Sir, I'd like to n-negotiate a m-modif-fication to a cont-tract."

"Certainly! How about this: when you are in negotiations, you wear Japanese clover clamps on your nipples?" Professor Thorndike asked.

Wanting to ask what Japanese clover clamps were but definitely cognizant of the issues with actually asking, Hanae nodded her head.

Professor Thorndike smiled, reached into the drawer again and pulled out two clover clamps connected by a thick chain and walked over to her. He pulled her left nipple a little away from her body and then slowly let the clamp close on the nipple.

"Ahh! Ouch!" Hanae cried and jerked but held her spot valiantly. And repeated her response to the other nipple being clamped. But she didn't break position.

Looking slightly disappointed, Professor Thorndike then asked: "Now, which contract do you wish to negotiate?"

Frustrated but hiding it well, Hanae briefly closed her eyes at the wave of pleasure and pain that pushed through her: "Sir, I'd l-like to negotiate for access to my c-clothing after the office visits and negotiations."

"Very well. Disappointing, I'd like to see how you handled having no access to your clothing. Oh well, okay, during official functions as defined by your superior, your superior shall have complete permission control over your orgasms. Agreed?" Professor Thorndike looked at her expectantly.