Something is bothering Sora about Masaya, the person who brought him home. From time to time, Masaya’s eyes lose their life, and his lonely gaze seems to shift to something far off into the distance. One day, Masaya brings home a boy named Riku who is two years his junior. When Masaya is with Riku, he seems happier, and he stops staring off into the distance. And yet, Riku separates himself from Masaya and goes away… The story of how a cat brings two people together. The story of a first love.