Rin Okumura had gone through a lot in the past week, from finding out that he was the son of no less than Satan himself to completely changing his life and becoming an exorcist despite that, he had processed a lot. It was the weekend, though, and he was ready to unwind. He got to his dorm, happy to find it empty, and he found a strange little box on his bed.
He inspected the box. It was wallet-sized, white, and tied with a peach ribbon. On the top of the box was a small note that read: "You're gonna enjoy this!" It was cryptic and crude, but Rin decided to open it anyway. He felt he could handle himself, and he didn't want to have to involve his brother if it was anything bad. "Well, here goes!" He said as he untied the ribbon and removed the top, bracing himself immediately afterwards.
Nothing happened, so he looked inside, seeing what appeared to be a necklace. It was very shiny looking, maybe silver or even platinum, and Rin picked it up to inspect it farther. It was a simple chain with a strange pendant. The pendant comprised of two open circles that almost looked like a figure eight, and a cylinder that was nestled in between the two. It almost looked phallic to Rin.
He fiddled around with the pendant, only to find out that the column could separate from the circles, and each of them had holes for the chain to latch onto, so one could wear each piece separately if they wanted to. Rin decided to try the whole pendant on as is.
Rin laid on his bed, deep in thought, and soon, he was starting to feel horny. "Weird, I just jacked off yesterday!" He said to himself, but he nevertheless began undressing, letting his impressive eleven incher get some air. He may have been fifteen, but he was already hung. His balls were also considerable, larger than eggs, but not quite as big as oranges. He had always wondered why he was big for his age, but now that he knew that he had demon blood, he figured it was that. Nevertheless, he began pumping his meat, his hands greased up with lotion.
He didn't last as long as usual, and soon, his cannon was shooting off. After each shot, his dick grew an inch, widening to keep the proportions, and his balls swelled out in turn. After five or so shots, he was spent. He was completely oblivious to his growth until he was back in a normal state of mind, where he was shocked to see that his junk was even bigger!
He took off the pendant and started cleaning up, not bothering to clothe himself yet. Soon Rin wanted to...