A young couple is in a long-distance relationship. Every night, before they go to sleep, they make sure to call each other to hear each other's voice and feel connected. Each night, they say "Daiyo daiyo" to each other, as a reminder of their love and promise to stay in touch. A young man is missing the voice of his beloved and is asking her to call him before she goes to sleep. He desires to hear her voice one last time before she drifts off into the night. A young woman is feeling lonely and wants to hear the voice of someone special before she goes to sleep. She pleads with them to call her so she can feel a little less alone.