The captain of the Blue King's special guards, 'Gunjou', which is made up of handsome boys. Asagi is actually a secret child of the Emperor and is the true Blue King. Asagi infiltrates Tatara's army on the orders of the White King, plotting to play Tatara and the Red King against each other.

Asagi has a contrary and self-centered personality, and he hates physical labor. Though he is very skilled with a sword he is physically weak.