There are 7 dormitories for international students which contain 652 rooms in total.
6 of them with 582 rooms are located in 15 min. walking distance from the campus, and the other with 70 rooms is in about half an hour distance on foot and underground.
Depending on the room size and type, the rent is set between 15,000-25,000 JPY/month. Besides the rent, room cleaning charge and bed linen rental fee, utility charges in monthly 5,000-18,000 JPY will be asked.
Basically, up to 6 months, however, another 6 months extension can be accepted if there are any vacancies.
This depends on location and room size, but most likely it should be 50,000 JPY/month.