If you go with Travel Agency then Visa is diffrent...your TravelAgency will fix everything for you & you no need show the Bank Statement. If you go Japan alone or friend without travel agency then you need go Japan Emberssy do the Visa by your own...then you must have minimum RM6k in your Bank...RM6k per head  (They don't care how you get where you get...Just make sure got Rm6k for 1 week Visa)