(The broader serpent-under-dragon power structure / Orochi’s role under Kaido continues to develop beyond this window — but the name-tell itself is now confirmed by the on-page fruit reveal Ch. 933.)
Earliest known caller
(Caller TBD.)
Why this matters
A name-etymology seed dropped at Wano’s threshold: the named-but-not-shown Shogun Orochi carries a serpent name (Yamata-no-Orochi) explicitly set against the dragon Emperor Kaido — telegraphing the serpent-under-dragon power structure of Wano’s collaborator government.
Surname now on-page (Ch. 919): the prior anti-spoiler guard (“the surname is a forward reveal, NOT on-page <=0917”) is LIFTED — the full name Kurozumi Orochi is printed @0919 p.7. The serpent-fruit payoff (Hebi Hebi no Mi, Model Yamata no Orochi) lands Ch. 933 — the seed is now confirmed.