Days later, still in the back courtyard.
Feng and Kentaro both placed their ninjutsu scrolls on the table.
Kentaro spoke up first:
"This shouldn't be Magnet Release. Magnet Release can control almost all metals.
Yet this ninjutsu can only control metal prepared in advance."
"Mm, this ninjutsu controls metal rather than magnetic force.
So perhaps it could be called Iron Release, but definitely not Magnet Release."
Feng also nodded and said.
Though the two had studied it for several days without yet learning the ninjutsu on the scrolls, they had thoroughly grasped its basic principles.
The thief Five-Inch Nail's researched Ninjutsu: Torpedo Needles required the caster to infuse their own chakra into prepared iron nails in advance before those iron nails could be manipulated. Moreover, a single chakra infusion could only manipulate the nails once; casting it next time again required preparing iron nails and infusing chakra in advance. It belonged to the category of high-preparation, low-power, chicken-rib ninjutsu.
Its original version was called Ninjutsu: Kunai Formation, similar to Ninjutsu: Torpedo Needles. By infusing chakra into pre-prepared kunai, one controlled the kunai, but the controlled quantity was not as high as the nails controlled by Torpedo Needles. However, a single chakra infusion allowed an unlimited number of control instances, limited only by the consumption of chakra on the chakra-infused kunai.
Furthermore, if chakra was infused into the same kunai an increasing number of times, in the end one could even manipulate the kunai as fluidly and skillfully as an extension of one's own arm without infusing chakra anymore. In terms of power and returns, this far surpassed the Ninjutsu: Torpedo Needles researched by Five-Inch Nail.
Yet this was merely a hypothesis by the creator of this ninjutsu, and its truth remained unknown because the other party had failed to find