Ryo's sword

Ryo‘s sword is the second weapon that Aragami finds and uses to stealth kill his opponents. It is also the weapon that killed the shadow empress as well

Ryo used this weapon before being Aragami and after being Aragami too, it bears light essence and it has been shown that Aragami can use light essence to a degree.

It is the sword used after Orochi‘s sword which was tossed away by Aragami after killing Sora