Doujin circle that consists of Shinryaku! Ikamusume official anime staff.
This circle was set up for creating/selling their Ikamusume-themed doujin illustration books. Its website is shared with Aotama, another doujin circle for Astarotte no Omocha! staff's illustration book.
Circle name: あるばとろす (Arubatorosu or Albatross)
The other circle name: あおたま (Aotama)
