[Nyororin]

Depending on what you are doing, I`d say you can get by with only about 120,000/month - for two people.

We`ve been there, done that, and were quite happy and comfortable at the time. (Although I can`t say I`d choose to do it again.)

48,000 for rent
12,000 for utilities
20,000 for food
20,000 for train passes

and... whatever was leftover was spending money. There were months in which we only used 10,000 for food, and months when we went way over. But it was more than enough to survive and be quite content.

Now, if you want to live in a huge apartment, eat out every night, own a new car, buy lots of cool stuff, etc. You`ll probably need more than 300,000 a month.