25時、ナイトコードで。 ニーゴミク ニーゴリン ニーゴMEIKO ニーゴルカ
Project Sekai group. Often shortened as "Niigo", "25" or "25-ji".
Usually recognized by grey/white frilly clothing, empty eyes, and red neck ribbons.
Don't use this tag unless a Vocaloid specific to this Sekai or the 4 OCs are present.
Don't use for solo posts of any OC.