I have oversized luggage. How do I reserve luggage space on the train?

First, book a "Reserved seat" ticket on Klook. Second, select "Seats with oversized luggage space" at the checkout page.

Only the Tokaido, Sanyo, and Kyushu Shinkansen lines require oversized luggage seat reservations. A JPY 1,000 fee will apply if you bring oversized luggage onboard without a reserved space.