Keiji Okuda

Keiji Okuda was Kasumi Goto's former partner and a former member of the Alliance Intelligence Agency under the alias of Abraham Rumoi. Due to his work he had a Graybox implanted to allow him to remember what he needed to in order to do his job. Eventually he acquired some very sensetive information that if made public would do a lot of damage to the Alliance's reputation. When he acquired the information he came under prosecution due to his work of stealing classified information and sellling it. However prosecuting attorneys were forbidden to use his graybox memores to incriminate him due to an Alliance statue based on the Fifth Amendment of U.S. Constitution about self-incrimination. After the trial, he vanished and was eventually tracked down and killed by Donovan Hock. Hock removed his greybox and has been trying ever since to crack it.

Eventually after Kasumi joins up with Shepard, she asks him to help her retrieve the box during a mission to Hock's estate on Bekenstein. The mission eventually sees to the killing of Hock and the recovery of Keiji's graybox.

After the mission, Kasumi acccesses the box and sees her parter one last time. He says that if she is watching this then he is dead and then he reveals the data. He asks her that to destory the data and the memories. Shepard can persuade Kasumi to folllow his wishes or to keep them.

Trivia

 * Judging by the images that are showing around while Kasumi is accessing the box, their relationship was a little more than professional.