Eiko's brother Tak Ishiwata is a private chef for government officials and A list celebrities (Private Chef to Jason Momoa). He runs a Japanese restaurant in St John's, Newfoundland.
Eiko had a track on World 1-2. A compilation album with notable game composers from games such as Silent Hill, Ninja Gaiden, Journey and Video Game Orchestra.
Eiko was the only woman on stage during applause alongside AAA composers for the Video Game Symphony. Her piece from The Girl and the Robot was adapted for choir and orchestra performed by the Montreal Symphony Orchestra.
At age 13 Eiko won 2nd place in the E.J. Pratt ARTS and Letters Competition for Visual Arts. The first place winner was 17 years old.