Íko

Íko (イーコ) is a friend of Saten Ruiko, who appears in Toaru Kagaku no Railgun (PSP game).

Toaru Kagaku no Railgun (PSP game)
While going to meet with Saten at a karaoke box, Íko and her friend Kaburagi Yumi are attacked by the Disciplinary Guides. Saten later arrives as the two are being carried into an ambulance.