Rivers End

is a Japanese light novel series written by Tsumugu Hashimoto, with illustrations by Otohiko Takano. The series began publication on December 10, 2001 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
Takumi is a 14-year-old junior high school student. An email is suddenly sent to his cell phone. Is there a sea in your town? Takumi is confused, but soon he begins to communicate with a girl named Yui, the sender of the email. On a snowy night, a whitening morning, a noisy lunch break, the two continue to exchange "words" over and over again. In an uncertain world, only each other's "words" were real. The kindness of the moment, the warmth, and-. They were unaware. At that time, something was about to begin.