"The safe word is... Strawberries."

Wh-what is she...

Harumi removed her panties from under her skirt and collapsed on top of Matsuri.

"S-senpai!"

"Shhhh..."

Harumi pushed her panties in Matsuri's mouth.

Cold... sweet...

Harumi's panties soaked in Matsuri's saliva. Harumi grabbed her by the chin and held her up close to her face.

"Isn't this what you wanted?"

She bit down on one end of her panties that stuck out and pulled it, drawing Matsuri closer. The lacy, black fabric separating their lips. Harumi could see her eyes slowly succumbing to lust. Harumi pushed herself back up and looked around for things she could use on Matsuri.

Matsuri removed Harumi's panties from her mouth and held them in front of her, before pressing it up to her nose.

Harumin Onee-san...

Harumi grabbed the rope she found on one of the shelves and turned to Matsuri.

"Who fucking told you to remove those from your mouth?"

She dropped the ropes and grabbed Matsuri by the hair, pulling her head back.

Matsuri saw her. Harumi's usual kind eyes were gone. She looked down at her in eyeing her like a prize. She could feel Harumi's lust, emanating from her person and Harumi shoved the panties back in her mouth and pushed her to the ground.

Harumi propped her up on her knees, removed her clothes and began binding her, around her chest, stomach, her arms.

The rope was rough and unkempt, stray fibers pricked Matsuri's skin. Harumi wrapped the rope around her thighs and ankles and before she knew it she fell on her stomach and was immobilized.

Harumi pulled her ankles and wrists behind her back and tied them together.

"There we go..."

Matsuri was completely immobile. Her struggles were sniffed out by the rope, every time she moved the rope felt like it tightened around her.

This... feeling...

A wicked smirk flashed across Harumi's face. She took Matsuri's panties and put them over her face covering her eyes. She stepped back and admired her work.

"My magnum opus..."

Harumi pulled out her phone and took a photo of the helpless Matsuri on the ground. She couldn't help but lick her lips at the sight.

"Now... I've got something important to do. I'll be back, be a good girl until then."

What!? She's leaving!? She can't fucking leave me here like this!

"MMM!"

Matsuri struggled, the rope scratched and pricked her skin. Harumi stood over Matsuri and she pulled out the panties from her mouth again.

"AGH! DON'T YOU FUCKING DARE LEAVE ME HERE LIKE THIS!"

Harumi slapped her.

"That's no way to talk to your master, you little bitch."

M-master?

"Let's see how long you can keep your attitude up when I'm done with you..."

Harumi leaned in closing in on Matsuri's lips. She stopped short and chuckled.

"You're so cute..."

Harumi pushed the panties back in her mouth and stepped away towards the door.

"Don't worry I'll be back."

The door slid open and Harumi stepped out and closed the door behind her. She let out a sigh of relief.

"Whew... I didn't think I was going to be able to pull it off. I play a mean Dom."

She looked up and saw Yuzu and Mei walking towards her.

"Oh hey you two!"

Yuzu and Mei's faces were red. Mei was following behind Yuzu with a finger in her mouth, looking down at her feet in shame.

These two...

"H-hey Harumin! Whatcha up to?"

"Nothing really... Hey Mei... could I borrow the key for the school from you, I promise to give it back to you in the morning..."

The request snapped Mei out of her 'trance' and she was back to her authoritarian self again.

"Why?"

"Uhh... I have some stuff to do and it means I'll be home late..."

Mei inspected her.

Shit... she can see right through me...

"Why were you in the shed?"

Shit...

"Well?"

"Cmon Mei, we can trust Harumin, I'm sure she's not doing anything illegal."

Yuzu walked over to the door.

"It's not like she kidnapped someone and is hiding them in the shed, right?-"

"Yuzu! Wait!"

Yuzu pulled the door open and saw the bound Matsuri on the floor.

Huh?

"Hey! Harumin, why is Matsuri on the floor wrapped in ropes and gagged?!"

Mei peeked inside and stared at Matsuri. Excitement shot through her, like adrenaline. Harumi and Yuzu's arguing became muffled noise.

That feeling of helplessness, that feeling of submission, the blurred lines between pain and pleasure. She felt those before. When Yuzu restrained her into the bed. When Yuzu held her against the wall.

Mei found herself with her finger back inside her mouth again.

"Ahem... fine. Here take the key. I want it first thing in the morning. But first, One, this shed better be clean in the morning, Two, you will replace the rope you used and Three..."

Mei walked over to Harumi and handed her the key and whispered to her.

"Send me pictures and videos..."

Harumi was taken aback.

"S-sure..."

Mei smiled at her before turning back to Yuzu.

"Cmon Yuzu, let's go home."

"Eh!? We're going to leave those two?!"

Mei grabbed Yuzu's hand pulled her away.

"Listen Harumi! If you hurt Matsuri even if you're my best friend, I won't forgive you!"

"Yeah, yeah I got it."

Harumi smiled and waved the two away before turning back.

"I'd never hurt anyone. But I do leave marks..."

I have some time to kill. Guess I'll go grab a book from the library.

Matsuri lay on the cold ground. Unable to move.

How long has it been? Over an hour? This feels like an eternity...

She couldn't stop her drooling.

This is disgusting. Why would an-

Her train of thought stopped dead in its tracks.

"MMMMMMM!!!"

Her back arched, her arms stretched and her toes curled.

F-fuck! I-I have to pee!

The rope bit, and prevented her movements.

The sensation was overwhelming, she couldn't relieve herself, she struggled even more.

What is this?! Thi-this is torture!

Matsuri's body writhed, her drooling became uncontrollable and she began to cry. She rolled around, floundering like a fish on land.

I can't! I can't piss myself!

"MMM!"

She rolled into the shelf and knocked something out.

thud*

The noise woke Harumi up who was asleep outside the shed with a book on her face.

She's at her breaking point?

Harumi rushed over to the door and peeked inside.

She watched Matsuri struggle.

Cmon almost there...

Where are you Harumin!?!

Matsuri couldn't hold it anymore. Her back arched again as she relieved herself.

Oh god... w-what is this feeling? Embarrassment... pleasure... it feels so good... this feeling of relief...

But at the cost of my dignity...

Harumi rushed inside and sat next to her.

"You did good."

H-Harumi? She's praising me?

"You held out until the last minute. Good job."

The words made Matsuri shake. The feeling of relief flooded her. Harumi removed the panties from her mouth and head and greeted Matsuri with a kind smile.

"Cmon lets get you cleaned up..."

Matsuri couldn't speak.

"Next time I'll use treated rope..."

"N-next time?"

"Yes. Next time. Don't tell me you don't want more?"

I-I- I want more!

That look of ecstasy on Matsuri's face. Harumi had never seen anything like it before.

I'm addicted. I want to see... more of this... I want to see this face of Matsuri's... the face no one else but me sees.