God Slaying Emperor Blade is a sword that belongs to Cocytus.
The blade is an odachi with the length exceeding 180cm.
Among the twenty-one weapons Cocytus has in his possession, it is the sharpest. Its edge is so sharp that it can cleave through magical armor or even physical enhancement.
- Cocytus only unsheathes this weapon to those he has the greatest respect for.
- This weapon looks very different in both the manga and anime. It looks like a normal katana.
- In the English publication of the Light Novel, the God Slaying Emperor Blade name was translated as Imperial Sword Zashin.