Tsunade gave a soft snort, then asked Genma, "How do you plan to test these ideas of yours?"
Genma thought for a moment. "I've mastered three nature transformations so far. Yin Release is the strongest, Yang Release comes next, and then Lightning Release."
"I should first try to train Yang Release and Yin Release to their limits. I might get a pleasant surprise."
"After that, I'll try Yin-Yang Release..."
"Of course, I need to master the other nature transformations too—and understand them thoroughly. Lightning, Water, Wind, and Earth Release each correspond to one of the four basic states of matter."
Shizune looked puzzled. "Four states?"
Tsunade explained, "Water Release is liquid, Wind Release is gas, Earth Release is solid, and Lightning Release is plasma. I think that's right?"
Genma nodded.
Shizune asked again, "Then what about Fire Release, Lady Tsunade?"
Tsunade folded her arms across her chest. "I don't know. If you want to find out, you can look it up in the library."
Shizune turned to Genma.
Genma gave a rueful smile. "Fire Release is probably a special case. It doesn't correspond to any state of matter."
"How should I put it? Fire is actually a phenomenon caused by the release of energy. What we see as flames is light and heat released when matter burns."
"Only when the temperature gets high enough does matter enter a plasma state."
"Still, Fire Release is important too, because every substance has an ignition point."
Shizune and Huixiang nodded as if they understood. For now, neither of them had mastered any nature transformation besides Yang Release.
Tsunade, on the other hand, had mastered six of the seven nature transformations—all except Wind Release.
"So you have to master all seven nature transformations?"
Tsunade asked.
Genma nodded. "I think that's the only way to