well, i dont know about japan, but i assume it is a lot cheaper than a month trip to EUROPE.

I went to europe ( 7 country, 9 cities ). It was a tiring trip, but hey, it is worth every single cent i spent. So here are the budget report.

SINGAPORE AIRLINES ( return tickets ) RM3500. Stop in London Heatrow.
EASYJET- London to barcelona Barcelona to berlin Berlin to basel Vienna to London, London to Rome Rome to Paris = RM1900
Bus from basel to stutgart, munich, vienna, klagenfurt = RM300
Euro Train PARIS to LONDON = .. forgot....

The others are food and souvenir. In total for a month trip ( including shopping in primark PARIS and berlin ) = RM14000
So heres a tip, try applying an MSC student card ( international student card, and arrange with them for a trip to JAPAN. ) A WHOLE LOT OF BENEFIT FOR STUDENT!!
1. EXTRA Luggage weight = 30KG per person
2. CHEAP FLIGHTS and ACCOMODATION! REALLY CHEAP!
3. GUIDE can be arrange
4. Free entrance on museum and other public attraction with the card.

if not, just go for qatar airlines, they usually have discount price to hot spot.