Pat yourself on the back if you guessed that Alphadia Genesis was the Wii U title Natsume were teasing for E3—they just announced it.
Alphadia Genesis is developed by Kemco, and is a 3D role-playing game that was originally released for smartphones using Unity. Kemco later revealed to Siliconera that they were bringing the game to consoles, and began porting it to Wii U.
Alphadia Genesis is already available in Japan via the Nintendo eShop. Natsume have not announced a release window for the game yet.