“Wh-what is this…! This is human anatomy practice. Hnn, stop it right now. This is weird…!”

“I already explained. I’m checking how the human body’s structure works.”

My master smiled brightly. His blue eyes captured every moment of my changing state. I couldn’t escape his gaze, bound by it like ropes.

Heat surged through my entire body and my legs trembled. My lower belly grew hot. Something tickling kept building up. The unfamiliar stimulation muddled my fading consciousness.

“I’ve been thinking about why I keep failing, and that was the problem. I didn’t know what level of stimulation was appropriate for an ordinary human.”

Even though that delighted expression made me angry, I couldn’t suppress the excitement bursting out. Without realizing it, I instinctively rubbed my legs together. The inside kept itching and feeling strange.

“Haa, ahhng, hnn…!”

“The book said that when a woman gets aroused, something called the cl*toris down below swells up. It would be nice if I could directly confirm how much it grows.”

Unfulfilled pleasure was no different from pain. My body kept heating up, but this thirst wouldn’t go away.

“Wh-when… will this end? Hnn, haa, ngh…!”

“Until I obtain meaningful research data.”

“I mean! When, ugh, is that?!”

“Who knows.”

Vrrrrm—!

The vibration intensity increased once more. Just the recoil of my body jolting with each breath turned my head into a jumbled mess. Sticky fluid flowed from my lower half, making wet sounds.

“Ahhng…!”

I nearly lost my mind and cursed him out. My master watched me panting and answered leisurely.

“You said it yourself. That to develop the toy, I should learn about methods to please women. This is part of that process.”

Why did I ever say something like that? My mouth was always the problem.

“If that’s the case, this is already enough…!”

“This won’t be enough. Unless I check it with my own hands, that is.”

“What… did you just say?”

“If you don’t like it, you can keep doing this for days on end.”

My master whispered softly, his devilishly sweet smile sending chills down my spine.

“So, what will it be? There’s a quick, intense method that’s stimulating but over fast, or you can stick with the slow, torturous one like now.”

How could someone this cruel and sadistic be one of the “100 Greatest Mages Who Changed the World”?

I didn’t think I could feel any more humiliated than I already did. All I could do was hope he would finally quench this burning thirst.

“Just touch it, only touch it! Anything more than that is, hngh, not okay!”