I was 18 years old when I moved to a flat in Madrid to study near the university. This happened when I was 20. It was a Saturday morning, I had finished my exams and was packing up to go back to my parents' house the following weekend.

I went to take a shower. I left the door open since it was that characteristic heat of early summer. I took off all my clothes and soaped up well. I thought I heard the door opening but with the water running I didn't hear it properly so I ignored it.

I got out of the shower, dried off, and started to get dressed. Unusual for me since in summer I always walk around the house naked, but I was planning to go out to buy something to eat. I put on my underwear and jeans. I didn't have time to put on my socks or shirt when someone grabbed my right forearm from behind and pinned it against my back with one hand and covered my mouth with the other.

-Mmmph- I tried to scream.

I tried to remove the hand covering my mouth with the arm I had free but he was very strong. He dragged me to my room, where I saw a backpack on my bed that wasn't mine. I saw him in the mirror of the wardrobe, which was in front of the bed. He was a muscular man dressed completely in black with a balaclava.

He released my arm and I tried to remove the hand covering my mouth. He put his hand in his pocket and pulled out a gun, pointing it at my head.

-Stay still- he ordered. I stopped trying to remove his hand and groaning-. Put your hands behind your back- I did it-, I'm going to remove my hand from your mouth and you're going to stay very still and quiet.

I did it. He stopped aiming the gun at me and turned around to open the backpack. I wanted to scream but the gun intimidated me even though he had left it on the bed. I had my back to him but I could see him through the mirror. He took out a roll of gray duct tape and tied my wrists.

He brought my arms to my bare back, wrapping me with the tape. He made three passes, one below my navel, just at the height of my wrists; another below my nipples and another above. He left me completely immobile from the waist up.

He stood in front of me and cut a smaller piece of tape with his teeth. He stuck it on my mouth gagging me. I tried to move my lips to remove it but I don't know what kind of tape it was, it was tightly fixed.

He pushed me onto the bed and I sat down. He knelt down and was going to tie my legs when he saw something in my pants that startled him.

- Did you get hard?

- Mmphmo- I tried to deny it, but it was very obvious.

-This is the first time this has happened to me- he said with a laugh-. Well, since we are here, let's have some fun for a while.

He stood up, grabbed my hair and pressed my face against his crotch. I could feel his cock growing slowly.

- Mmphmmph- I groaned.

He lowered his pants leaving his dick exposed. It wasn't very big despite how...