Tsubaki Amamiya is the twenty nine year old sister of Lindow and the former leader of the Fenrir Far East Branch’s Combat Unit. She joined the Fenrir Far East Branch in 2059 but retired in 2069, making her one of the first Gods Eaters to do so. As a Gods Eater she was specialized as a sniper and was peerless in her achievements. Tsubaki continues to work at Fenrir as first instructor and commander of the Women's Division and as both the supervisor for the first to third units and the advisor for newly recruited Gods Eaters.
Tsubaki is very authoritative and strict, showing no distinction between rookies and veterans. She is dedicated to her position, even telling Gods Eaters not to search for Lindow after his assumed death and to instead focus solely on their mission. Tsubaki is a master of hiding her true emotions and despite her hard exterior in front of others will break down when alone.