How much money should be enough?

Hi all, I dunno whether this question has been asked a lot of times over here but I've been wondering how much money is enough for a 4/5 week holiday in Tokyo.

I'm thinking of taking ��2500 (519,299 yen/ 4,932 USDs) but I dunno whether it should be enough. I'll be coming with a friend of mine and he's taking a similar amount with him. We'll be staying at a hostel and probably live on noodles and McDonalds.

We plan to go around Tokyo and Japan to see how it is but also I plan to go to a concert there and to some events.

Do you reckon ��2500 should be enough for/ 5 weeks?

Thanks!

Assuming this does not include your flight, that should be plenty, especially if you have cheap accommodation.

well im doin a trip through out asia im starting in japan and i will be spending 4,000yen a day on food and room, then prolly 3,000yen for fun and goin out.
for japan i have around 600,000yen for my trip in japan. i will be travelling by bus becasue the bullet trains cost way too much plus i have all the time in the world to travel so i can take my time