Suenaga Kokoro, an international flight attendant, lives with her mother and grandmother who operate a traditional restaurant in a lively downtown district of Tokyo where customs and traditions run deep and neighbors know each other like a big family.

Ryou is a girl isolated by everyone else in her class, she doesn't even have a cell phone because no one would call her anyway. One day, she suddenly starts hearing voices of Shinya, who lives in a different prefecture.