Where do bullet trains go in Japan? The Shinkansen network is very extensive, and covers the following lines: Tokyo - Osaka, Osaka - Hakata, Tokyo - Aomori, Hakata – Kagoshima, Tokyo – Niigata, Takasaki – Kanazawa, Aomori - Hokuto. Mini-shinkansen also covers Morioka – Akita and Fukushima – Shinjo lines.