IIJ expands IIJmio eSIM lineup and appoints Sumikko Gurashi as ambassador

Internet Initiative Japan (IIJ) has announced an expansion of its IIJmio mobile service eSIM lineup. Starting September 1, 2026, the company will offer eSIMs with SMS functionality on both Docomo and au networks, as well as data-only eSIMs on the au network.

To support this rollout, IIJ is launching several promotional campaigns. The ‘eSIM Start Support Campaign’ will allow customers to use the 2GB data-only eSIM plan for up to three months at 0 yen per month. Additionally, a ‘Happy Price Campaign+’ will offer up to six months of 5GB data increases for customers applying for the 25GB voice call SIM/eSIM plan.

In a separate branding move, IIJ announced that the character franchise ‘Sumikko Gurashi’ will serve as ambassadors for IIJmio. To celebrate this partnership, an induction ceremony and photo session featuring the character ‘Tokage’ will be held during the ‘IIJmio meeting’ event in Tokyo on September 5, 2026.