Japan is cold now,take some warm jacket & sweater ,umbrella,maps(Country’s for making plan,and city‘s can help you )
And,the same to Eliot’s,money,cash is the best。
And how long time you‘ll stay in Japan ?and just a little trip?
Tokyo,Kyoto,Osaka are worth to visit。
And you can enter from Tokyo,exit from Osaka,just check the map you‘ll see
And from Tokyo to Kyoto,you can take Shinkansen(a kind of highspeed train)
Hope can be your help.