Onee-san Sensei wa Danshikousei ni Edzuke Shitai

"By the way, bending and stretching are similar squats. Squats are also an exercise that you need to do while you are conscious of the movement of your upper body, like this."

For some reason, Sensei is even teaching me how to squat properly. Her posture, where both of her arms are raised to the side of her face, increased the shaking even more, and I got the impression that her rich parts were exposed more defenselessly than when we were doing the bending and stretching, and because of that, it is pushing me to the furthest of the limits of my rationality. 

I had no idea that bending and squatting could be such a fascinating exercise to watch. No, I'm sure I'm just overwhelmed by Sensei's charisma. Female Knight-sensei's squats are a sacred warm-up exercise for entering the battlefield called the volleyball court, and I shouldn't defile it by observing her rich breast bobbing up and down. I should definitely refrain from looking at it, but I'm sure my eyes are probably also moving up and down to the rhythm of the squat Sensei is doing.

"Well, then, let's do the next exercise."Umihara, sit down and spread your legs."

"Ye... yes Sensei."

I sat down and spread my legs like Sensei instructed. When I did the flexibility test in the sport fest last year, I was more flexible, but right now I think that my legs have become slightly stiffer.

"It's better to soften your muscles little by little. Then push your upper body forward... all right, Sensei will assist you by pushing your back."

Just as I was wondering if such serious warm-up exercises would be necessary before playing a volleyball game, I felt two large, soft things press against my back.

"Uhmm... Se... Sensei, I don't think we need to do this after all; we're just warming up."

"Sensei is very knowledgeable when it comes to stretching, so you can leave it to me. Does it hurt on this part?"

It's not that painful, but something else is becoming unbearable as the minutes go by. Sensei then leans in close to my back and slowly puts her weight on me, it's as if she's making me check the unevenness of her marshmallows covered by her bra with my back.

"Oh, hey look, it looks like Sensei finally caught Umihara-kun."

"It looks like Sensei is slowly putting her weight on Umihara-kun. As expected of Female Knight-sensei, her movements look like they came from a martial artist who specializes in submission moves."

It's true that I'm suffering in a way, but of course it's not that sort of suffering.

Right now I'm fighting against myself as the marshmallows that cling to my back steal my ability to think straight, and I almost let out a strange voice. At this point, I don't care at all about stretching my muscles.

"Bend your body over to your right leg. Yes, Hmmmm, you are still quite stiff. It's easy to get injured if your body is stiff, so it's better if we keep doing stretches... Hey are you listening to what I'm saying to you?"

"Yes. I'm listening."

"Good, you're listening properly. Now let's stretch over to your left side too. OK, breathe out slowly, 1, 2, 3, 4..."

When Sensei is pushing my right side, her right breast is pressed against me, and when she pushes on my left side, her left breast is also pressed against me. I didn't expect a physical education class where I would need to endure something like this.

Students shouldn't be conscious of their teacher as the opposite sex, but this is too much. I wonder if breasts are some kind of weapon that awakens humans' primal instincts or something like that?

The feeling of being hit by Sensei's breast is different when she's wearing a suit, and if I put it into words, it's the kind of feeling that you can feel when you touch a raw marshmallow directly. Since the front of Sensei's jersey can't be closed, the only barrier between me and Sensei's breasts are her thick T-shirt and her bra, which have no wires on them, probably because they are the kind of bras used in sports, but they properly support Sensei's overly large breasts. I want to give my thanks to the company that made Sensei's bra, as they continue to support Sensei.

"5, 6, 7, 8... Good now, for the last session, let's bend forward."

"Uhmmm... Se... Sensei, I think I've already stretched myself enough. See? I'm flexible enough now, so..."

"What are you saying? Your body is still quite stiff, which is why Sensei will help you until you are flexible enough."

When Sensei said that her cheeks had brightened and it looked like she was still full of motivation to help me.

I'm still being misunderstood by the students around me, and they still think that Female Knight-sensei has finally brought down the intellectual yakuza to her knees.

I continue to stretch some more while feeling Sensei's pressed marshmallows behind my back.

Jun, next time I expect that you will not be absent, especially during the physical education class.

"Why did you suddenly stop? Umihara, you need to focus on your muscles and stretch them out yourself."

Sensei whispered those words gently into my ears. I will do anything for Sensei's sake... Wait! What am I thinking? I shouldn't be brainwashed just by having Sensei's breast pressed against me.

When Sensei finally released me, my body was quite hot, and I returned to my worried classmates while walking with unsteady feet.

"Umihara-kun, are you okay?"

"I'm fine... There's no problem at all. This won't hinder me from participating in the game."

"You're amazing... "I don't think I'll be able to come back to the gym if I'm squeezed like that."

After all, it seems my classmates really thought I received strict guidance from Kishikawa-sensei. Well, I guess it's better for them to misunderstand what really happened.