"What is this flute you're holding?"
Muzan inquired. Hearing his words, Kokushibo picked up the broken wooden flute he had been tightly clutching all this time. He fell silent for a moment, then honestly revealed the origin of the flute:
It turned out that when Yoriichi Tsugikuni unleashed the Fourteenth Form of Sun Breathing, Kokushibo's Blood Demon Art had also been forced out by him, and at that moment Kokushibo had already resigned himself to death. He unleashed his strongest swordsman technique and closed in on Yoriichi, but just as the attack was about to land, he was pulled back by Nakime's Blood Demon Art—
Chapter 37