"M-master…" Celeste breathed out, panting with flushed cheeks.
Even ignoring her glittery wings, Celeste's naked body at full size was a sight that caused me to space out for a moment. Her erotic expression made it even more stimulating. My mouth fell open and I was at a complete loss about what to do. Blood started swelling to other areas of my body as well. This was completely overwhelming.
"C-Celeste…" I tried to look away. "I'm not your Master."
Ah… I failed.
"Please… I need it…" She said, her lips quivering, "Please… put it inside me."
I bit my lip to shake myself out of this. "Wh-what? Right… it must be the fairy dust? It's some kind of aphrodisiac for fairies, right? Just fight your urges, okay? You don't need to act on this. How about we just think non-ero thoughts."
"N-no… Master… I can't… it's okay… p-please… just stick it inside me."
"Hah, hah…" I panted, sweat coming down my brow. "L-like this…"
I reached out toward her, all of my willpower disappearing, however, my hand went right through her head, which was still just a simple illusion. That allowed me to snap out of it for a second.
"Y-you're a fairy, that's right! You're only like 2 feet tall!"
Celeste's glittery wing folded back and then she lay down, lifting her legs and spreading, giving me a clear view of that. Even her pubic hair had just a hint of sparkle, and her woman parts looked untouched.
"It's okay…. The illusion is just to make you feel more comfortable." Celeste panted, reaching down and spreading her lips open. "If you just put it here, it'll definitely fit."
"Th-th-th-that's impossible!" I coughed. "You're just a little… I mean… I'd tear you in half!"
Celeste shook her head. "Fairies are a creature of mana. Our physical bodies are similarly composed of mana. I am not held together by bone and tissue like you are. My body would easily make room for your size… so… it's okay if Master has me!"
"I'm really not your Master…"
"Master is Master! I won't have sex with anyone but Master, so since I'm having sex, you're definitely Master!"
"F-first… change back to your normal form!" I ordered.
Celeste's body shrank back down and she was back to the little fairy. She looked far more innocent and delicate as she lay on the floor. I was hoping her shrinking would make the sight of her spreading herself open less dangerous. Strangely enough, it only seemed to enflame my desires to push her down. Strike that, there was no such thing as pushing her down. It'd be like a cat pushing down a mouse. The only choice was to use her as my toy or release!
"Please… if you don't… my mind will break. Fairies aren't like humans. When we're aroused, we must be relieved to remove that arousal. It won't go away on its own. You must take responsibility for this!"
"What's with those rules? Wait, can't you take care of yourself?"
She shook her head. "I… don't do that…"
"S-seriously! Now is not the time to be picky!"
"That's why Master must take care of it!"
"You…" I shook my head. "D-do I have to use… you know… it?"
"Eh?"
"I'll certainly break you if I use it."
"You won't!"
"S-still… how about if I just use my tongue."
"Y-your tongue? Down there? B-but it's dirty!" She said, blushing.
"You… a finger then!"
"F-f-fine… J-just be gentle, this is my first time."
"Your first time! How does that work?"
"It works when stupid Master puts fairy dust on my head!"
"You didn't warn me to stop!"
"E-enough… please… I'm going to die. Master…"
"I'm not your Master!"
"Don't you get it!" She said tearfully. "I said it. Fairies aren't like humans. We can only have sex with our master, if I have sex with you and you're not my master, then I might as well kill myself!"
"Hah? Why am I only hearing this now?"
"When has it been relevant before!"
"I don't really get it, but basically, you're saying that you can only have sex with me if we are bonded magically?"
Celeste nodded tearfully.
"And once a fairy grows sexually aroused, they must have sex, or they will continue to grow hornier until they collapse and die."
Celeste nodded again.
I sighed, "Very well. I'm not saying I get it, but do you want to be my slave?"
"Yes, Master!"
"Bond Slave!"