Slave for a day

I had been His sub for a while and wanted to take the next step. We discussed it at length, I wanted to be His slave 24/7. Even though we didn't live together, I was prepared to obey Him at all times, and travel to Him on weekends until we were ready.
I woke early and dressed as he required. Shelf bra with my DD breasts pushed up high, nipples almost showing, and His favourite semi sheer blouse, unbuttoned one button too many. I was to also put on the chastity belt that He had made for me. My arse and pussy both plugged and secured by the thick leather strap. I clicked the lock closed (He has the key) and pulled on my black pencil skirt. It almost reached my knees but was tight, causing me to take tiny steps. My black heels finished the outfit. One last check in the mirror and I was ready.
The car arrived and drove me to His house, I was uncomfortable from the trip and the driver staring at my tits the whole way.
I knocked on the door.
"Enter" He called.
I opened the door, dropped to my knees and presented myself. Arms behind my back, knees apart, chest pushed forwards, eyes to the floor.
He stood up, moved towards me and closed the wooden door, sliding the lock across with a loud click. He walked around me slowly, nudging my legs further apart and pulling my shoulders back further.
"Slave, you remember the rules? Silence unless permission is granted, unless of course it is out of your control."
I nod nervously.
He moves in front of me, His cock is firm and pressing against His trousers. He moves close to my face and takes my right hand, placing it on His erection.
"Service Master"
I remove His cock and take it into my mouth. His hand rests on my head, guiding me to slide Him deeper and deeper down my throat.
He grasps my hair tightly and pulls my face hard against His crotch. I gag and choke but He continues until He releases into my mouth.
He pushes me away.
"Remove clothes slave but leave underwear on then stand against the wall."
I obey immediately, standing in my bra and belt with my back to the wall, arms to my side.

We have practiced these commands many times so I am aware of where this may be leading.

He moves close, strokes each breast before pulling each nipple up so that it is protruding over the top of the bra. He pinches and stretches each nipple hard and I close my eyes as the burning sensation grows.
"Arms up"
I obey, putting my arms above my head. He begins to slap my breasts hard, I have to remain still and quiet or I will be punished. Over and over He hits them, pinching and pulling the nipples again and again. I am panting hard and struggling to remain still.
For the next few hours He leaves me then returns to inflict more pain in my breasts and nipples.
I am exhausted and my legs begin to buckle.

The plugs deep inside me have also stimulated me to the point of being very moist. He slides His finger under the leather and smiles.
"Remove the bra and shoes slave, then prepare your Masters dinner before bed."
I drop to my knees and crawl to the kitchen. This is the only place I am permitted to stand without permission from Master.
He is seated at the table and I kneel beside Him. He places a bowl on the floor and places my food in it.
While I am beside Him, he slips the black leather collar around my neck. He pulls on the chain and I rise to face Him.
" You have passed the first test slave. Tonight you will share Masters bed and show your appreciation. Come, I will show you where you will sleep when Master does not require you.
He stands and leads me, crawling, to a bedroom where there is a large wooden box. There were holes drilled around the top of the box at about 2 inch intervals. He walked over and opened the lid, "These are your quarters slave. Quite satisfactory for you to rest quietly and out of site."
I nod my head in thanks before He pulls the chain again and we move to His bedroom. He has already set up for me, ropes in place. He pushes me to the edge of the bed where He releases the belt and roughly removes the plugs. I am relieved but stimulated.

He moved about the room before commanding me to take my place, I lie on the left side of the bed with my arms stretched above my head and legs apart as He has trained me.
He tightly restrains my arms to the top of the bed and taking the chain attached to the collar, he threads it around the top rail so that my head is immobile.
He explores my body, touching, rubbing, pressing and stroking me. I am responding to Him, nipples hard and erect and pussy wet and warm, ready for Him.
The night was spent fucking over and over. Legs up over my head while he rammed deep I side me to legs wide open flat on the bed as He lay flat on top of me. He suckled my nipples and stroked mt clit. He licked my pussy and fingered my arse but did not permit me to cum.
We finally slept for a few hours before he woke and used me once again. His touch had me squirming and I knew that I was close.
I bit my lip as he fucked me hard, laying heavily on top of me, biting my nipples while he drove deep inside me. He finally came, rolled off me and got out of the bed.

He returned, released me and set my chores for the day. He went out for a while and I did as He asked.
When He returned He did not look happy.
"Slave, you must get into the box as I have unexpected guests coming over." He grabbed the chain and pulled me into the room. I climbed inside the box, there was a piece of foam in the floor and that was it. He closed and locked the lid. I was trapped in darkness.
" oh slave, any noise and you will be severely punished,"
He left the room and I heard Him greet His guests.