What is tanjiro sword?

Tanjiro's sword, also known as the Nichirin Blade, is the primary weapon used by the main character Tanjiro Kamado in the anime and manga series "Demon Slayer: Kimetsu no Yaiba". The sword is made of a unique metal that is infused with sunlight, giving it the power to slay demons. Each sword has a specific color that represents its user, and Tanjiro's sword is a vivid shade of scarlet. The blade itself is curved, resembling that of a katana, and has a diamond-shaped cross-section. Additionally, Tanjiro's sword was crafted by a skilled blacksmith, enabling it to withstand the intense fighting and crucial battles that occur throughout the series.