When the saber howled, the world followed. When the saber howled, the King ascended.
Wei Wuyin recalled these two sentences mentioned in an old folklore of his hometown, something his older brother would often say to explain what it meant to wield a saber. It wasn't a choice, it was a birthright.
The moment an individual was born, their hearts held a sharpness that allowed them to move the world to their will. It was profound nonsense at the time he heard this, but feeling the entire world act upon his beck and call, becoming a saber that followed his edge, Wei Wuyin understood an insight that touched upon the Saber Dao.
Wei Wuyin had named King after those two sentences. King was so thrilled by this name that it threatened to explode if its name was changed, also because he wanted to name it "tch".