Edge

The guardian who trained Zero to fight, and who told him plainly that raw power was not enough.

Who he is

Precise, dignified, a scarlet scarf that "seemed to move with its own purpose" (ch. 1). He fights with manifested energy and bone attacks.

His assessment of Zero on meeting him was one sentence: "Your combat experience is non-existent. We'll need to address that immediately."

What he taught

He turned Zero's raw manipulation of reality into technique. His warning is the one that matters, and the Prologue proves it twice over:

"Your power is considerable. But power without precision is as dangerous to allies as it is to enemies." (ch. 1)

Open questions

• Nothing about him is followed up. He is one of the guardians who walks away at the end of ch. 2 and does not return.