Busses in Japan can be confusing for the first few times. Always carry cash (notes and change) ,
Busses in the larger cities will accept the IC Cards ,whereas busses in the rural areas may not
Busses should be boarded from the rear doors. Check for IC Card signs on the bus ,
if in doubt .. Cash .
Collect a ticket when you get on. Take note of the number on your ticket.
The is a board at the front of the bass that indicates the stops and fare for that stop. It increases as the trip goes on.
Using the number on your ticket , match that the number on the board and that is how much you need to pay
Meanwhile stay calm, count the stops, count your cash and wait for your stop ;)