How much is needed for an international student to live in Japan?

Question:

My friend is going over to Tokyo next year for his undergrad and is trying to do the math on it.

He is fine with having the local cuisine there and wishes to either rent a small apartment or live in his university dorms.

So, based on lodging, food, transport and entertainment, how much should he prepare on a monthly basis?

Answer:

You need 150,000-200,000 yen to live in Tokyo for 1 month. But it depends on each case after all.