The image "Kimetsu yaiba (187)" captures a moment of heavy silence in the final hours before dawn.
In the story, Yoriichi is eighty years old, his skin as wrinkled as parchment and his back slightly bowed by time. Yet, as he draws his blade, he moves with the fluidity of a god. For Kokushibo, who sacrificed his soul for eternal youth and power, seeing his "weak" human brother still standing—still superior—is a moment of pure psychological terror.
Yoriichi strikes with the speed of a sunbeam, nearly severing the demon's head in a single blow. But he dies standing up, mid-stride, passing away from old age before he can finish the swing. He leaves behind a legacy of "Sun Breathing" and a small, wooden flute—the only thing he kept from his childhood.