[Machine Translation] Mashiro, a high school student, has feathers on his back. It is the feathers, not her personality, that make people like her and dislike her. Mashiro, who had been feeling empty inside, is saved by her art teacher, Takaoka, who says, "Have you ever laughed from the bottom of your heart? She falls in love with Takaoka, an art teacher, who says, "Have you ever laughed from the bottom of your heart? Mashiro's confession is rejected, but Mashiro, thinking of Takaoka, begins to investigate a disturbing school rumor that "if you stay in the art preparation room, you will suffocate to death"... A world where humans and beasts coexist. Three love stories are born in the world where humans and beasts coexist.