John had a rather crazy idea and began to make a wish.
"I wish that I could mark everything I touch with my left and right hands when necessary. Living beings won't notice that they've been marked, and there's no visible sign. I can mark anything with just one of my hands. Furthermore, I can only mark specific areas or parts of something. I also wish that I could merge something I've marked with my left hand and something I've marked with my right hand by thinking of the desired goal and clapping my hands together. I can't freely determine the result. Furthermore, I can't mark the result and dissolve the fusion by touching it with both hands and pulling them apart."
The stone warmed, and John instinctively knew it worked. He immediately tried something silly. He marked his penis with his left hand and a pencil with his right. Then he thought about both and clapped his hands together. Immediately, the pencil disappeared, and his penis suddenly felt quite hard. He looked down and was slightly startled. Instead of his penis, he now had a pencil dangling between his legs. He touched it and noticed that it felt like an ordinary pencil. When he tried to write with it, he had to suppress a scream. It hurt a lot and felt as if his penis head was being forcefully rubbed against something rough. He immediately grabbed the pencil with both hands and pulled with his left hand. There was a jerk, and they separated. He examined his penis and noticed that at most the penis head was slightly reddened. He immediately decided that he needed to be more careful with his penis during fusions. He then marked other objects in his room (including a pillow, a glass of water, and a pair of panties with his left hand, and a beanbag chair, an ant farm, and even a fresh condom with his right hand). After he finished in his room, he walked into the hallway. His sister, Zoe, passed him. As he tried to greet her, she swatted his left hand away. He reacted in time and marked her completely with his left hand. He laughed to himself, because he would have some fun with her later.