If you are using a micro SIM card issued before 2019:

It is possible to issue a new SIM card (multi-sized).
A new SIM card will be issued.
The fee to issue a new SIM card is 3,300JPY (tax included).

Please contact us for support.

Any SIM cards issued from 2019 until now are multi-sized SIM cards. Therefore, it is possible to change the SIM card size without issuing a new SIM card.