As the first project to commemorate the 1.5th anniversary of the official release of "NIKKE", a "popular character voting event" and an "official commemorative live broadcast" will be held.

As the first project to commemorate the 1.5th anniversary of the official release of "NIKKE", a "popular character voting event" and an "official commemorative live broadcast" will be held.
To commemorate the 1.5th anniversary of the official release of "Goddess of Victory: NIKKE" coming soon, we will be holding a variety of commemorative events and special projects both inside and outside the game!...

The linked article is in Japanese.