Aliasing oki_(okami) → oki_(ōkami)
Link to alias

Reason:

Proper spelling.

Related aliases:
oki_(Ōkami) --> oki_(ōkami) (e621 treats these overlined characters as unique, so capitals and lowercase are different)
ninetails_(okami) --> ninetails_(ōkami)
ninetails_(Ōkami) --> ninetails_(ōkami)

Related implications:
oki_(ōkami) --> ōkami (Copyright tag)
issun --> ōkami (Copyright)
chibiterasu --> ōkami (Technically from ōkamiden, if we want to make a new chain there)
sakuya --> ōkami (Copyright)
ninetails_(ōkami) --> ōkami

EDIT: The tag alias oki_(ōkami) -> oki_(okami) (forum #273146) has been approved by @bitWolfy.

How widespread is the use of diacriticals like ō when searching tags?

The tag alias oki_(ōkami) -> oki_(okami) (forum #273146) has been approved by @bitWolfy.