Of the countless trains running on Japan's 20,000-kilometer (12,000-mile) rail network, a few are decorated with images of anime and manga characters, colorful ads, and designs by notable artists. Here is a small sample. Pikachu on Seto line, Aichi prefecture * * * * * Galaxy Express 999 train, Furusato-Ginga line, Hokkaido [Photo] Characters from Leiji Matsumoto's "Galaxy Express 999" anime/manga