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The Mysterious Man got fed up with not knowing about anyone involved, at least from this world, so he pulled out a book and read all about them. Having magical power on his side, it only took him a few seconds to read the entire book from cover to cover. He then understood just how fitting his curse on Happosai had been, as well as all the interesting things he could do to others.
In particular, he realized how he had been placing fitting curses, for the most part, all along. Most of them hadn't triggered yet, but that would change soon enough.
However, he now had several new people mixed up in all of this. Joe and Emeral, who he knew were in some kind of disguise, were the ones bugging him the most. He decided to see just what they could do with the curses on their shoes before messing with them further, so he turned his attention to Tommy, Kalshion, and Katarina. Tommy was easy enough, within moments a new CD was sitting in his stack, containing a new curse. Kalshion and Katarina would be tougher, but it didn't take long before a curse was put on their skates. Nothing major, just a little random propulsion/braking while they were wearing them, enough to disorient them but not hurt them.
It was about then that one of his minions showed up reporting finding no information in the library on the other-worlders. The Man considered this, dismissed the minion, and put in a formal request to the Center for Storage of All Information. That way he would get the full story of anything and everything about them, and then he could filter out everything but what he cared about.
As Happosai reached the high point of his flight, the Mysterious Man turned back to the complicated curse he was working on. He wasn't sure whom he would use it on yet, but it was sure to be trouble in more ways then one. As soon as he had completed this one curse he would be able to make similar ones in mere seconds, but being one of the few curses he didn't have a lot of experience with he needed to learn the general workings of it first.