Rivalry
Although Rain wanted to improve the technique further using the power of the aspects as well, and he still needed to finish researching the void path, he decided to help everyone learn the simpler versions of the Origin attacks. Once the first people learn that, they can take his place and teach the others, after all.
That kind of technique required a lot of focus, and the highest levels also consumed a bunch of mana, so trying to learn it with practice was extremely hard since people would only have a few attempts. Still, the early levels were quite easy to understand. So, it didn't take long for people like Danny and Annie to learn… since they fought using their fists like Rain. The others had a bit of a harder time since they used weapons.
"Try to use the technique against each other; don't try too hard, though, since you don't want to knock each other down," Rain said. "The best way to mastery is practice."
"I might want to knock him down," Annie smirked.