TRAIN + TRAIN

is a Japanese light novel series written by Hideyuki Kurata, with illustrations by Takuma Tomomasa. The series began publication on September 10, 1999 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
The colonial planet "Deroka", far away from the earth, had a unique educational system. In the spring of 15 years old, young people board the huge school train "School Train" and spend a year traveling around the city of Deloka. Reiichi Sakagusa, a boy who was supposed to take a regular course train and live a normal life, encounters a wild girl arena, so he gets stuck in the "special train" where the outcasts gather ...