Domestic and international fly luggage

I have to fly from Osaka to Narita, and then connect to international fly from Narita to Bangkok in the same day.
Considering is domestic fly first, and international fly after that. My question is how many luggage and weight if I check them in and carry on luggage?
I know that domestic fly won't let me check in luggage the same as international fly. Is there any special for luggage for people fly back to back with the same airline.
Thanks in advance

If you buy the two sectors as one package, I believe that the international flight's limits also apply to the domestic flight.

If you buy them independently, then the domestic limits will apply. They are usually 15 kg.
http://www.jal.co.jp/en/dom/service/bags/#muryo
https://www.ana.co.jp/eng/dms/svc/airport/baggage/index...