Directly to you from Twitter:
Celica and 3 others from Fire Emblem Echoes are part of a 5★ Focus. There are Rite of Shadows story maps and limite… twitter.com/i/web/status/8…—
Nintendo of America (@NintendoAmerica) May 15, 2017
…Wanna play? Buy a 3DS.
That being said, click on Fire Emblem Heroes for everything you need to know about the game. 😀