An original character by [[oso (toolate)]] that is a [[personification]] of the 'Coprinopsis atramentaria' (formerly 'Coprinus atramentarius') species of mushroom, commonly known as the [i]inky cap[/i] or [i]tippler's bane[/i].

While normally edible, it is poisonous when when ingested in combination with alcohol.

Her name is listed on oso's website and in his artbook as "Kurohiji Hitoyo" (黒肥地一夜.)
coprinopsis atramentaria