Firstly,  we need to focus on just KEYWORD "JAPAN"...

THEN, you can go downward for next keyword "TRAVEL".....

-------------------------------------------------------

After that, you can now in details, enjoy the BENTO (FOOD),   and RAILWAY!!!!

Especially, due to culural & historical background,

JAPAN has very rich cultures for HAI-SAN (Seafood**) and RAILWAYs~!!!!

it means, by reading this FANTASTIKA Manga series, you can enjoy boths~!!!!