Nezuko's demon transformation actually strengthens her relationship with Tanjiro. Despite her transformation into a demon, Tanjiro continues to care for and protect her, showing unwavering loyalty and dedication to his sister. Nezuko's demon abilities also prove to be invaluable in their fight against evil, bringing them closer together as they work as a team to overcome challenges. Overall, Nezuko's demon transformation deepens the bond between her and Tanjiro, showcasing the power of their sibling love and loyalty.
