Need help with luggage storage query.

I am in need of some innovative ideas here.

I am in Tokyo at the moment and will be travelling to Osaka on Aug 15.

My flight back to India is on Aug 20.

I don't want to carry all my bags from Tokyo to Osaka and then to the Osaka aiport.

I want to understand if there's a luggage service that can do the following:

Pick up my luggage on Aug 15 in Tokyo and deliver it to Osaka Airport on Aug 20?

Any other creative suggestions welcome to solve my problem.