- "Broadly speaking"
- ―A phrase that he would put in his sentences
Higashi Kunieda (国枝 東 Kunieda Higashi): A doctor who nursed Shouichi back to health after he washed ashore. Sometime after, Dr. Kunieda would place him in the care of Professor Yoshihiko Misugi.
A New Transformation
In Kamen Rider Agito Special: A New Transformation Dr. Kunieda is introduced as a friend and colleague of Professor Yoshihiko Misugi. Dr. Kunieda is portrayed as a laid-back person that's always willing to give a helping hand.
Dr. Kunieda had a son, Hiroki Kunieda, who committed suicide after failing to control his seed of Agito which was transforming him into Agito.
Behind the scenes
Higashi Kunieda was portrayed by Masaki Kyomoto (京本 政樹 Kyōmoto Masaki), who previously portrayed Ryusuke Taki in Kamen Rider Black.