BUR #22595 has been approved by @nonamethanks.
rename dark_matter -> dark_matter_(kirby)
deprecate dark_matter
The character tag of Dark Matter from Kirby (series) has no qualifier for some reason, despite another named such also exists. I suppose the original "dark matter" tag should be deprecated as well for futureproofing, as this word is much more well known for the scientific concept of invisible matter in the universe.