Sirbus Helfang's sword, Shukketsu-kō (Bleeding Steel)

A demonic katana forged from demonic blood, hence its namesake and nigh indestructible crimson blade. It feasts on the blood of its enemies, granting it and its wielder greater power in return. For generations, it had been passed down to the Cerberus Society's greatest warriors, up until Sirbus Helfang, who has since rebelled the society and joined APEX, ensuring that never again will this blade be used for their malicious intentions.

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Yup, we're back on that Harbingers grind, and yes, Sirbus Helfang is up next for his portrait.