In the end, I chose a longsword called Cross Kopis—Flash.
Cross Kopis—Flash: the name itself was quite ordinary, but with the addition of the word "Flash," it became somewhat unusual.
The blade was 130 centimeters long and 8 centimeters wide. Its edge was silver-white, straight and natural. The blade was as sharp as a ribbon. When swung, it possessed a flashing quality. When used to attack, it was incredibly fast.
Furthermore, adhering to the system's principle that all its products had to be top-quality, this longsword was exceptionally sharp. In Mirai's view, even if it was not specially made, he was confident it could still break through anything!
Exchange: Weapon—Cross Kopis—Flash.
Exchange successful. Energy consumed: 10.
As soon as the system's voice fell silent, Mirai's hand sank, and the Cross Kopis had appeared in his grasp.
"Mirai?" Kiba called from behind him.
"Ah, it's me," Mirai replied. Then he suddenly remembered that the Sound ninja should be attacking Naruto's group by now...
"I'm really sorry. I just woke up," Kiba said. Though he sounded apologetic, his tone was casual, with no real hint of embarrassment.
"I just woke up too. Keep your voice down—Hinata only just fell asleep." Mirai smiled. "Still, that depends on how vigilant you are."
"What happened?"
"Naruto's team was attacked by the Sound ninja. Naruto and Sasuke were both knocked unconscious by Orochimaru and have no combat strength left. I have to help them."
"Oh? So that's what happened. Oh, right—then that explains why Orochimaru didn't cause us any trouble. Naruto held him back." Kiba suddenly understood and hurriedly said, "I'll go with you."
"No. You need to protect Hinata here. I can handle it alone." Mirai's eyes flashed as he activated the Body Flicker Technique. When he reappeared, he was already not far from Naruto