Kokushibo also realized something was wrong.
His breathing style seemed to be affected by Tanjiro.
Even the Moon Blades that had been scattered around his body began slowly dissipating.
More importantly, the energy inside his body was starting to malfunction.
It was as though all of it had been suppressed.
It could no longer flow freely at all.
Impossible! How could this boy possess such power?!
At that moment, a figure suddenly appeared in Kokushibo's mind.
It was his younger brother, the legendary prodigy-Yoriichi Tsugikuni!
That figure slowly began to merge with Tanjiro's silhouette before him.
"No..."
Slash!
Just as Kokushibo tried to struggle, a flash of fire instantly appeared in his field of vision.
Tanjiro's Nichirin Sword was already slashing toward his head.
His previously impenetrable state had vanished.
Before Tanjiro's Nichirin Sword, Kokushibo's head was sliced apart as easily as snow melting in the spring sun.
His third form vanished at that very moment.
"Upper Rank One... I never thought I'd improve this much!"
"Thank you, Kazama!"
Tanjiro did not stand there in a daze.
He knew that Uchiha Kazama had bestowed this strength upon him.
Although this power was not his own, dwelling on that was not what Tanjiro needed to do now.
Instead, he needed to kill the Upper Rank before him!
Killing an Upper Rank would mean far fewer people in this world dying at the hands of demons.
That had always been his reason for wanting to join the Demon Slayer Corps.
As for his sister's original problem, that had already been... resolved...
Then Tanjiro's body began spinning rapidly.
Upper Rank Demons were all extremely difficult to kill.
So he had to make sure he killed Kokushibo completely while the energy inside his body still remained!
Firelight, the radiance of the sun, a rapidly