Why don’t you improve your Japanese at ISI Chukyo and work part time? You can build language skills as well as work experience through a part-time job. Compared to Tokyo, living expenses in Gifu are considerably lower!
ISI Chukyo also focuses on the international exchange program with local communities. It offers Home Visit Programs and also organizes the activities with local high schools. Take advantage of the school with your local community and improve your Japanese skills in a friendly environment!