Collection of stories. Volume 1: 17-21 1) There Were Two Chickens in the Garden (Niwa ni wa Niwa Niwatori ga Ita, 庭には二羽ニワトリがいた。) A strange world where aliens have taken over the human world, and only two humans...

When high-school student Souji Kushiki, an academic achiever and talented athlete from a well-to-do family, returns home from boarding school, he finds that his sisters Harumi, Youko, and Saki have changed...