Artist's commentary
Azamaru
The beloved sword and Noble Phantasm of the Heroic Spirit, Taira-no-Kagekiyo. Originally a sword which was passed down through the generations of the Heike. Normally, it takes the temporary form of two swords called "Azamaru," but upon the Noble Phantasm's True Name revelation, it reverts back to its true form as a single long blade.
It is both powered by hatred, and exists as a physical amalgamation of that very loathing.
No living primate is safe from its touch. The moment Kagekiyo unsheathes this blade, you should proceed with extreme caution.
Although...as long as Yoshitsune is around, Master should not be in harm's way. Kagekiyo has even been relatively calm lately...