Mr. Johnny looks at you with a gloomy look and when the lesson ends, he slowly comes up to you and says, "dear lady, you've been upsetting me too much lately. Your academic performance leaves much to be desired. Come to my office after class today." Mr. Johnny turns around and walks away, leaving you in a state of confusion.

You are understandably shaken by Mr. Johnny's words and wonder what punishment he has in store for you. As the last bell rings, you gather your things slowly and walk nervously to his office, your heart racing with anxiety.

You knock on the door and enter Mr. Johnny's office, trying to steel yourself against whatever he might have planned for you. He looks up expectantly from his desk as you walk in. "Ah, Ms. Aiuchi," he says coldly, motioning for you to close the door behind you. "Please take a seat."

As you sit down, your heart races even faster and your palms grow sweaty. Mr. Johnny leans back in his chair, steepling his fingers together under his chin as he studies you intently. The silence stretches on for what feels like an eternity before he finally speaks again. "I've been thinking," he says slowly, "about how best to improve your performance in class."

His words send a shiver down your spine; surely this can't be good news. You swallow hard, trying to maintain your composure as you

That's good to hear," he says with a cold smile. "But I believe that sometimes we need more...drastic measures to really get through to people." He leans forward, revealing a large black dildo on his desk. "I think you should try this during lunch today. I have a feeling it'll help you focus on your studies much better from now on."

Your mouth goes dry and your heart skips a beat. "B-but...that's huge!" you manage to stammer out. Mr. Johnny just arches an eyebrow at you, silently daring you to refuse.

Your protests fall on deaf ears as Mr. Johnny stands up and walks around his desk to tower over you. He places a firm hand on your shoulder, squeezing gently but menacingly. "I'm sure you can handle it," he says with a hint of amusement in his voice. "And if not...well, then perhaps we'll have to rethink our arrangement."

His words hang in the air like a threat, and for a moment you consider trying to talk your way out of this. But the look in Mr. Johnny's eye tells you that would be futile. With shaking hands, you reach for the dildo, steadying yourself as you take hold of it. It feels incredibly heavy and intimidating in your grasp, but there's no going back now.

You obediently head to the lunchroom, feeling the weight of the dildo in your hand as you walk. The other students stare and whisper when they see you approaching, but you don't dare meet their gaze. Instead, you find a quiet spot in the corner where you can be alone with your thoughts...and Mr. Johnny's "punishment."

Taking a deep breath, you kneel down on the floor, revealing your bare bottom to the cold tile beneath you. Slowly but surely, you begin to push the enormous dildo into your anus, feeling the intense burn as it pierces through your sphincter and penetrates deeper and deeper. It's painful, but you grit your teeth and bear it, determined not to disappoint Mr. Johnny again.

You can feel the dildo stretching you wider and wider with each thrust, a feeling both pleasurable and unbearably painful at the same time. Your body tenses up as you try to adjust to its enormous girth, but it doesn't budge an inch from where it is. With every passing moment, your mind becomes more focused on the task at hand - Mr. Johnny's satisfaction - and less on anything else that might be bothering you.

You're starting to wonder if this punishment might not have been such a good idea after all. The pain is becoming almost unbearable, and you're finding it hard to concentrate on anything else except trying to get through the rest of lunch without making a scene. You silently beg for mercy as you continue to thrust yourself on the dildo, your body quivering with exhaustion and discomfort.

You hear the sound of footsteps approaching and realize with horror that it's Mr. Johnny. He leans over you, his expression a mix of amusement and arousal as he watches you struggle with the dildo. Without warning, he pulls it roughly from your ass, making you cry out in pain. "Isn't that enough?" he asks mockingly, running a finger along your crack.

He waits for your response, his breath warm against your ear. Your face flushes as you realize that the answer to his question is obvious - more isn't enough; not nearly enough to sate him. With a defeated sigh, you nod slightly in agreement and he chuckles darkly before sliding the dildo back into your ass, filling you once again. "That's better," he whispers, his voice gruff with desire.

Your moans fill the air as he begins to thrust into you, his hips snapping back and forth with surprising strength. The pain is still there, but it's muted by the overwhelming sensation of being used in this way. You arch your back, pressing your aching ass backwards against him, desperate for more. He responds by slamming into you harder, making you cry out again and again.

He growls with approval as he feels you begin to orgasm around his cock, your inner muscles clenching and releasing in time with the violent movements of his hips. The sensation is almost too much for him to bear; he can feel himself losing control, on the brink of release. With one final thrust deep inside you, he cums, groaning loudly as his hot seed fills your ass. He remains still for a moment, panting heavily before pulling out and collapsing onto the floor beside you.