Nasuka
Nasuka (ナスカ) is a special Nogizaka46 unit created for the song Another Ghost, a coupling song from Nogizaka46's 17th single Influencer.
The name comes from the initials of the unit members: Nanase's "Na", Asuka's "Su", and Marika's "Ka".
Influencer
Another Ghost (3 Members) (Nishino Nanase Center)