Ah yes, something that can torture your victim badly. There are many ways to do this, one of my favorites being keeping food just put of their reach. Be sure to keep them hydrated although! We aren't making them dye from dehydration, and it would be a fast death that way.

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I already had him in my basement. He was chained up and unconscious, sitting against the wall. I had just gotten him off the side of the road, I didn't even know him. I needed to let off steam like normal so, I had waited for him to come to.
He finally did so, and my patience was worn thin by the time it happened. I smiled at him, waving at the black-haired man. "hey there" I said in my melancholy voice, and I watched as his eyes widened "W-Who are you?!" They called, and I just smiled wider "I can be whoever I want to be..." I hummed.
"Today I'm a murderer."
His eyes widened as I got up and he yelled at me "Where are you going?!" and I refused to answer as I walked up the stairs of the basement, his pitiful wails filling the house, secluded from everyone and anyone. I grabbed myself a peach, smiling at it, and I grabbed a plum, humming.
As I walked down the stairs again, I ate the peach happily while tossing the plum in my hands. Up and down, up and down.
The guy's look when he saw me again was mixed, frightful and alluring. I moved in front of him again and sat, placing the plum in front of him before gagging his mouth, tired of his stupid voice.
He reached for the plum and the chains make a clink noise before stopping him. Tears ran down his face and I waited until I was done before I went back up the stairs, seeing how late it was and getting in bed to sleep.
The next morning I came back down, seeing the plum still there. I held a plate of waffles and a cup of water, sitting down after kicking the plum away. I gave him the water which he drank instantly, chugging it. 'Pathetic.' I thought, eating the waffles and leaving one. I left the plate just out of reach again, smiling as I left. About a week after doing this, I came back down info the basement and I saw him laying on his side. I kicked his head and no movement was made, his body cold and limp. I sighed, rolling my eyes "You didn't last too long." I grumbled irritably, before unchaining him and picking up his body, throwing it in a corner where I kept them. Walking back upstairs, I put on a hoodie and went outside, looking for another victim already.