Two races of half-bird half-human creatures live undetected among humans: The cockatrices and the basilisks. Kozakura Sora is a young cockatrice who switches schools for his assigned task of keeping an eye on Karasuma Rin, a basilisk and student council president. However, on his first day Sora flies into Karasuma Kai, Rin's younger brother. A fateful meeting that changes everything...