Total Concentration Breathing was a general term for techniques developed by the Demon Slayer Corps to enable humans to fight demons.
Its main function was to strengthen a human's heart and lungs, allowing the blood to absorb massive amounts of oxygen through breathing, instantly boosting physical abilities and granting stamina comparable to that of a demon.
Demons, meanwhile, were monsters with incredibly powerful physiques, extraordinary regeneration, and immortality. They could be understood as enhanced variants of vampires.
So, in short, Total Concentration Breathing could be simply understood as a powerful technique that increased explosive power in an instant, somewhat comparable to the ninja world's [Eight Inner Gates].
However, its effects were not quite as powerful, and its side effects were not as severe either.
But the best thing about Breathing Techniques was that, after reaching a high enough level, this state could be stabilized and maintained continuously.
This state was called [Total Concentration: Constant].
And that was something [Eight Inner Gates] could never achieve. From that perspective, it was somewhat stronger than [Eight Inner Gates], which could only erupt briefly each time.
As Kamado Tanjiro moved, the Nichirin Sword in his hand turned a deep blue, gleaming with a sharp, icy light as it mercilessly sliced toward Araki's neck!
"Water Surface Slash, huh..."
Araki smiled lightly. After making that teasing remark, he willed it, and a pale cyan blade burst forth from the hilt.
Although he had now mastered sword techniques of wind, water, and lightning, the one he preferred most in battle was still the Wind-Slaying Sword Technique.
He did not know why, either.
Clang!
The cyan light blade lightly collided with the deep blue Nichirin Sword, scattering sparks as the evenly matched pair each retreated.
Taking advantage of Tanjiro's position in midair, Araki's blade instantly lengthened like a