Across a wide range, swordsmanship might not be as destructive as ninjutsu or other techniques, but it was not necessarily weaker than them in a single attack, and it also possessed great versatility.
Moreover, it consumed far less spiritual energy than those techniques.
Whoosh!
Mirai tilted his head slightly to the side and dodged it.
"Your strength has grown so quickly."
"Oh, thank you." Mirai smiled, while inwardly continuing to cry out, "Exchange, Divine Wind Sword—select."
Exchange successful. Energy cost: 170 points.
Whoosh!
A longsword appeared out of thin air before Mirai. He reached out and grasped it. Then he planted it on the ground and looked at Kakashi with a smile. "Come." Mirai examined the longsword in his hand. It looked no different from an ordinary sword, yet it was surrounded by currents of air. When swung, the air flowed along with it, making it swift and light, as though it could cut through anything without resistance.
"Good sword." Mirai smiled.
Kakashi did not understand why a sword had suddenly appeared before Mirai, but so many miraculous things had already happened to Mirai that Kakashi no longer bothered thinking about them.
"Raikiri!"
Kakashi lowered one hand as a massive electric current condensed in it—the technique of an elite ninja, Raikiri!
"This level of endurance is only comparable to an ordinary Spiral Pill. Compared to the Big Ball Rasengan, it is not weak, but the Big Ball Rasengan's spiritual energy has already doubled and is still increasing." Mirai thought this, but then he suddenly saw Kurenai Yuhi sigh silently, a complicated look in her eyes.
Her expression?
Kurenai-sensei should know how strong I am and how powerful my Big Ball Rasengan is, so why did she show that emotion after Kakashi used Raikiri?
Mirai did not understand, but he became