This papercraft is Yousei-san (the Fairy), based on the Jinrui wa Suitaishimashita (Humanity Has Declined or Jintai) anime / manga series, the papercraft created by hipakura. They are mysterious beings with advanced technology that could be called magic. The fairies have permanent smiles on their faces and very literal, honest viewpoints on everything. Despite their cute appearance, they seem to have a total disregard for human safety. The presence of many fairies is supposed to increase one's fortunes, but they cause potentially fatal situations. They often request sweets from the heroine in exchange for their assistance.
Jinrui wa Suitaishimashita is a Japanese light novel series written by Romeo Tanaka. It set in a post-apocalyptic world where the human civilization has regressed and mankind keeps decreasing in numbers. The story follows an unnamed girl who acts as a mediator between humanity and the "fairies" who are small dwarf-like creatures attracted by sweets and happy things, but also have the habit to cause trouble to her with their powers in their endless search for amusement.
You can download this papercraft template here: Jinrui wa Suitaishimashita - Yousei-san Free Papercraft Download