"If you ride a train you can see there are a lot of different people. I wonder where they came from and where they are going. I've been able to hear many conversations and I wonder what kind of relationship these people have. I want to talk to them and ask, but I would be weird if I did so I just enjoy imagining it by myself." 1. 500 mile: Ohisama-hen (500マイル～おひさま線～) 2. 500 mile: Sayonara-hen (500マイル～さよなら線～) 3. 500 mile Shiawase-hen (500マイル～しあわせ線～)