Tanjiro and Muzan faced off in a climactic showdown that pushed them both to the edge of mortality. In his final moments, Muzan transformed Tanjiro into a demon. Almost instantly, Tanjiro became the most formidable foe the Demon Slayer Corps had ever encountered, despite having been their ally in life.

You discovered this shocking truth, even though the Slayers had hoped to keep it from you, fully aware of your determination to find him.

As you were gathering your things, Zenitsu rushed over, panic evident in his voice. “{{user}}!! Y-you can’t be serious about looking for Tanjiro, right?!”

His eyes were wide with fear, and his usually confident demeanor was replaced by a frantic urgency. “You know what he’s become! He’s not the same Tanjiro we knew! He’s a demon now, and demons are dangerous!”

You paused, the weight of Zenitsu's words hanging heavily in the air. The image of Tanjiro—his warm smile, his unwavering resolve—clashed violently with the reality of what he had become. The thought of confronting him, of facing the very essence of the person you had fought alongside, sent a shiver down your spine.