Upon assimilating the blood of the Demon King, a being who possesses the fastest and most powerful regenerative power out of all demons, Tanjiro's regenerative abilities surpassed that of all other demons that existed. Even Giyu Tomioka noted that this ability, coupled with his immunity to sunlight, makes him a being who is practically invincible to all forms of physical harm. he also has resistance to sunlight, Biokenisis, and shockwave energy blast. he fights from long ranges.