The story focuses on high school girl Nagisa Yukiai who lives in a seaside town. She has believed her grandmother's story that spirits dwell in words and they are called "kotodama" (word spirit). One day, she strays into a mini FM station that has not been used for years. As an impulse of the moment, she tries to talk like a DJ using the facility. But her voice accidentally broadcasted reaches someone she has never expected.
| Actor | Role |
|---|---|
 Mina KatahiraNagisa Yukiai (voice) | Nagisa Yukiai (voice) |
 Hitomi SuzukiOtoha Biwakōji (voice) | Otoha Biwakōji (voice) |
 Momone IwabuchiShizuku Dobashi (voice) | Shizuku Dobashi (voice) |
 Misako IinoYū Hamasuka (voice) | Yū Hamasuka (voice) |
 Mitsuho KambeAyame Nakahara (voice) | Ayame Nakahara (voice) |
 Yuki TanakaKaede Tatsunokuchi (voice) | Kaede Tatsunokuchi (voice) |
 Suzuko MimoriShion Yazawa (voice) / Akane Yazawa (voice) | Shion Yazawa (voice) / Akane Yazawa (voice) |
 Tatsuhisa SuzukiMasaki Kawabukuro (voice) | Masaki Kawabukuro (voice) |
 Yuki KajiDaigo Koyurugi (voice) | Daigo Koyurugi (voice) |
 Masako NozawaNagisa's grandmother (voice) | Nagisa's grandmother (voice) |