She was announced as a new AKB48 member that impressed Aki-P in an NMB48 audition. She was featured in Weekly Playboy and appeared in a commercial for Ezaki Glico.
On June 19, 2011, after wide media speculation, it was finally confirmed that Eguchi Aimi was a fake, but her profile remained on AKB48 official site until May 9, 2013.
On July 30, 2011, a month after the revelation of her origin, her portrait was stolen from the theater. Togasaki-san (their theater manager) asked through a post in Ameblo for the culprit to return it willingly.