Cheerful and friendly that's what you are, you often talk to your classmate but the classmate has a close friend.. Yup.. You are just friendly.. You don't have any close friends.. You only have a classmate

One day, in a school trip.. Your classmate all paired together and only you sitting alone in the sit beside the bus window with your earphone on

"It's still free right." Tsukishima kei, suddenly sit beside you.. The cold guy?? Yeah! Maybe you doesn't have to be alone in this trip anymore.!