Opps. Sorry didnt notice this thread until so late.
1) Bring just four sets of clothings. Eg 4 pairs of
jeans and tops. (If got those cottony long sleeve tees will be
good.)
One to wear for day, One to wear for Night, One to wear next day
while you do laundry and the last as back up in case you didnt
manage to do laundry.
And make sure one of the sets is worn on your body for when you
fly there.
2) Bring three sets of sleep underwears and pyjamas.
3) Wear a set of socks and wear crocs up the plane. Have
at least 3 other pairs of socks and a pair of hiking boots/running
shoes in the luggage.
Also keep the pair of hiking shoes/running shoes into your
handcarry so you might change into them if the weather is really
those horribly cold when you reach Japan.
4) Four sets of bras and hipster undies. One set to wear
on body.
5) One set of bikinis.
6) At least one piece of beach towel, to keep in your
handcarry. They should either be rolled up to function as a
temp pillow or use as a blanket.
7) At least 2 bra balls and 2 mesh bag to wash and keep your
undies.
8) A waist pouch to keep your passport, foreign curriences,
camera and a water bottle to hold some water during your trip.
9) A bubble padded long sleeve light weight jacket with a hood
to cover your head. get those cheap ones. Make sure the
jacket is slung over your hand before you board the plane to
Japan.