Apparently there was a backlash against the plot for the last Fire Emblem game, Awakening (which was also excellent), so popular manga writer Shin Kibayashi was brought on to create the story. (cogconnected.com)
The screenplay is written by manga writer Kazuki Nakashima (Kill La Kill). (firstshowing.net)
Manga writer Nobuaki Enoki received the Jump Treasure New Cartoonist Prize in April 2009 for his work, Rikuou. (manga.jadedragononline.com)