Story/Lore

The general premise of Danmaku Unlimited is of a fight between Nature, with her Valkyrias, against humanity. In Danmaku Unlimited 1 and 3, it follows a valkyria, while the second game follows with a human perspective.

The story of Danmaku Unlimited 1 was stated in the description of the app on the App Store. The story of Danmaku Unlimited 2 was found on the DoragonDev Wordpress, following a teaser trailer for the game. An interesting tidbit from the App Store description of the game can be noted here. The story of Danmaku Unlimited 3 appears more sparse, as a brief description was given on the Steam page in various pieces.
 * Set in the not so distant future, Danmaku Unlimited places you in a world that is gripped by destruction, caused by the will of nature to cleanse the earth of mankind that for long has been abusing her gifts. The manifestation of her wrath comes in the form of six goddesses, or Valkyrias. As beautiful as they are deadly, they wield the power to transform and re-purpose man's creation to their cause. As humanity crumple against nature's righteous onslaught, will you, the only Valkyria that still sees hope in mankind, fight to give humans a second chance? Or will humanity receive the judgement it so deserves?
 * Danmaku Unlimited 2’s story takes place after the events of the original, where humanity made huge technological advances from the powers left by the valkyrias. As part of the elite delta squadron tasked with recovering a recently discovered valkyrian power core, the routine recovery mission quickly unravels out of control as they come across forces beyond their imaginations.
 * Continue the saga as you fight to uncover powerful relics from the old war and unravel the secrets surrounding the Valkyrias!
 * It is about a guardian, entrusted with Earth, rebelling against their overseers.
 * Take to the skies once again as the last defender of humanity against overwhelming odds!