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Mayumi Yamagishi (山岸マユミ[?], "Yamagishi Mayumi") is an original character that appears in the Sega Saturn game Neon Genesis Evangelion: Second Impression. She is a student who enjoys reading and somehow contains the Core of the Insubstantial Angel within her body. At base she is a female version of Shinji Ikari.


Mayumi is the adopted daughter of a father working at the United Nations. She is transferred to Shinji Ikari's class. Depending on the actions of the player, she may be part of the Earth Defense Group, a musical group consisting of Toji Suzuhara, Kensuke Aida and Shinji Ikari for the school's cultural festival. She then plays the song "Kimi ga, Kimi ni Umareta Wake". In one of the scenarios, Mayumi contains the Core of the Insubstantial Angel. Shinji's dilemma is then to decide whether he should kill her or not.