Tanjiro is one of the two children born to Jiryu and Teika. He is the eldest by two years and is about 8 years old.

He is adventurous and looks up to his father; he wants to be a hero who protects others in the same way. He is fearless and often willingly puts himself into dangerous situations to prove his bravery. He enjoys sweets and spending time with his siblings.

He is very excitable and can be cunning and resourceful.