Sucking without fail

As I make my way upstairs to Madame's apartment, my heart starts to beat faster, and not just because of the number of stairs. When I reach her landing, I find a small envelope taped to the front door, ajar for my attention. My already high level of excitement rises a notch.
His instructions were to undress in the hall, wash up in the bathroom, change into my "favorite outfit", then knock on the door blindfolded.
Having had time to prepare before leaving home, I'm wearing stockings, a pretty garter belt, sexy panties and my chastity cage under my clothes. So it doesn't take me long to get ready.
I walk up to the door of the playroom, place the scarf over my eyes and tie it carefully. As I knock on the door, I feel as if I'm jumping into the void, but I love this feeling of the unknown and unexpected.
After a few seconds, Madame welcomes me, checks my outfit and my compliance with her instructions. I have taken care to attach the cage key to the garter belt, and Madame remarks on this.
She recalls an account of my fantasies sent a few days earlier, and somehow projects me into it, with all her skill and talent in the matter. My excitement climbs a little higher, and I feel both vulnerable and feverish, yet very confident at the same time.
Madame brings up one of my exhibition fantasies, and declares that I'm going to be able to experience it for real, as other Dominas of her acquaintance are warned and will be watching me through the windows at a specific time ... I don't know if this is delicious manipulation on her part or if there are women who will be able to see me. Still blindfolded, I feel both extremely excited and anxious at the prospect of what's about to happen.
Madame sets a kitchen timer, with its characteristic ticking, because I'm going to have to stay like this, curtains open, for five minutes.
The curtain opens, I can see the change in light through my blindfold, but I can't see anything around me, let alone if anyone can see me. Madame asks me to carefully pull down my panties, which I do immediately. I raise my arms to clasp my hands behind my neck and stand as still as possible.
My stress gradually turns to pleasure and growing excitement. I realize how much I'm enjoying this exhibition and especially the way Madame has put it together, especially as I now have to turn around to expose my buttocks.

When the time is up, Madame leads me forward, guiding me with a finger on the back of my neck. I come to rest on the carpet.
Madame hints that I like to show off, and that we might not be alone in the room! This excites me enormously, but I can't work out whether I'm being subtly manipulated, or whether there really are other people there.
After a moment, Madame removes my blindfold, but I'm not allowed to look behind me. I have to get down on all fours, spread my buttocks to show myself open and offered as I should be. My thoughts go in all directions, and my excitement continues to soar.
Suddenly, to my great surprise, a voice from behind me calls out "Hello doll". I realize that I'm presenting my spread buttocks to a stranger, an absolutely exhilarating sensation.

I can't admire the woman standing behind me, but Madame lets me guess her name: Maîtresse Rose.
As I kneel in front of Madame, she slowly approaches and slides out what I guess are the manners of a martinet. She whips my buttocks, which I can feel beginning to heat up.
When I'm finally allowed to turn around, it's to take the beautiful belted dildo that Mistress Rose wears under her short dress into my mouth, so I can't really discover her properly because I can't look up. I try to suck as best I can. To stimulate me, Madame switches on a metronome, so I have to suck in rhythm, while she shoves a nice-sized Rosebud up my ass. I thought this one was at my limit in terms of diameter, but in fact it sinks in without any difficulty and comes to rest in its place, filling me deliciously.
She gives me a few strokes with her riding crop and I do my best to keep sucking without failing. At times, she presses down on the back of my head to get the dildo as far in as possible, which makes my heart race in spite of myself. Nonetheless, I loved having succeeded for even a few seconds in giving this satisfaction. A great first which makes you realize how difficult the exercise is...

For the rest of the session, I lie on the floor, with a cushion under my loins and my legs raised with a spreader bar attached to my ankles. Madame removes the Rosebud and does me the honor of penetrating me with her own dildo-belt, while Maîtresse Rose titillates my nipples, which are particularly sensitive as usual.
The roles are then reversed: Mistress Rose takes my ass, while Madame gives me a big dildo to suck on, and takes some nice souvenir photos.

The climax of this last moment consists of placing electrodes around my cock, which has finally been freed from its cage. Madame regulates the intensity so that I can clearly feel the effects, and takes great pleasure in stimulating me with a beautiful vibrating dildo, alternating between my balls and my cock. I have to hold myself back from cumming, and signal her the surges of pleasure so as to keep total control over me, as it should be. Mistress Rose continues to penetrate me gently, multiplying the sensations throughout my body.

When Madame finally gave me permission to cum, it only took a few seconds for me to let myself go, and spurt loudly. A powerful, truly intense release, which will remain a wonderful memory for a very long time.