However, because an (underground) access linking the ticket gate to the opposite side is available outside each ticket gate, it is possible to go to the opposite-side ticket gate without returning aboveground even after descending to a ticket gate on the wrong side.
ただし、改札外（地下）には反対側改札口への連絡通路が設けられているため、反対側の改札口に下りてしまっても地上に戻ることなく行くことができる。