in 2003, gendo and yui work together at the research organization gehirn. gendo, meanwhile, recruits fuyutsuki into the organisation. after the failed activation test of unit 01 and yui's apparent death during this event, gendo fundamentally changes as a person. he becomes very cold and abandons shinji. he goes on to propose a plan to seele for achieving human instrumentality through third impact; but unbeknownst to seele, gendo's plan is really meant to allow him to be reunited with yui's soul. the only person gendo lets in on the truth is fuyutsuki, who, despite his dislike for him, agrees to help him with the plan. gendo enters into affairs with both naoko akagi and, some years later, her daughter ritsuko, seemingly casting doubt on his commitment to yui; however, it is implied that gendo was simply using them to achieve the means to accomplish third impact. shortly afterwards, in secret, gendo and fuyutsuki creates an imperfect clone of yui, by combining dna material from her and the second angel, lilith, and names her rei ayanami. to ensure himself control over third impact when the day comes, gendo puts life into rei by imbuing her with lilith's soul, and takes to raising her himself, passing her off as the daughter of a friend, who he is looking after. the day after the development of the revolutionary computer system magi is completed, gehirn is reorganized to become nerv, of which gendo becomes commander.