sentences:  Strike Witches
  
  A spin-off of the original series titled "Brave Witches" aired from October to December, 2016 and a second spin-off titled "Luminous Witches" is scheduled to air in 2021.On an alternate Earth during the World War II era, the world has been invaded by a mysterious alien force known as the Neuroi who take on forms similar to aircraft and spread a corrosive miasma.