Yes, voicemail is available with the Voice + Data SIM card.

Please note the following:

Voicemail is not included in our standard plans.
・The monthly fee is 330 JPY (tax included).
・The default language for voicemail is Japanese. If you wish to change it to English, you will need to adjust the settings yourself. For instructions, feel free to contact our customer support from the link below.
・Listening to voicemails incurs a charge of 22 JPY per 30 seconds (tax included).

To add the voicemail function, please request the service [here].