|Ada Higginsエイダ ヒギンズ|
|Hair||Blond, Curtained, Long, Parted to Side|
|Role||American, Daughter, Wealthy|
|Visual novels||Side character - Shironagasu Tou e no Kikan|
Ada is the sole daughter of Roy Higgins, an aristocrat living in the Five Towns in New York. After reading her father's remorseful suicide note and the mysterious invitation he was sent, Ada asks detective Ikeda to investigate her father's death as well as Shironagasu Island.