Moving out of my place and moving into a friends place

Hey yall, im planning to move out of my apartment as soon as the rental contract ends. So the person who has been living with my friend is moving out and i am moving in. My question is, how is the overall process like how do i change my address in japan? Are there any problems with such things like that, also the place im moving into is a rental apartment.

by Agitated-Spot3047