- Young-eon: Teacher! It's me, Young-eon! It's me, Young-eon. Can't you hear me? Teacher? Please say something. Teacher? Teacher?
- Mi-Hee: Who has this beautiful voice? It's KANG Seon-min, the announcer! Seon-min, how are you?
- Seon-min: My best friend is absent without telling me. Thus, I'm in a bad mood.
- Seon-min: I can't get used to my voice on speakers.
- Radio Teacher: Everybody thinks they sound different on speakers, though it's the same voice.
- Young-eon: I'm sorry Seon-min. I couldn't help it. You're the only one who can hear me. Don't be scared.It happened last night after you left. I should've left with you. Maybe this is punishment.Seon-min... It's me, Young-eon. I would send you a message on your cell after the broadcast. You would wait for me when I practiced singing. Seon-min... Seon-min...
- [starts to sing]
- Seon-min: I believe you're Young-eon.But i can't believe you're dead. I'm talking to you know. Except that you're invisible, nothing has changed.
- Teacher: If the notes don't go together, they're only noises. But if they do, they become a beautiful chord. Listening to the sound is more important than singing well. You should be able to tell which sound goes well with which. Otherwise, they're noises. Like human relationships.
- Mi-Hee: Sleeping during class, snoring like crazy. Swinging the stick in his hand, hitting students for fun. No help for helping students. Too lazy to teach. You lazy bastard. Lazy bastard!