Miho Iwakura is the mother of Lain Iwakura and her older sister Mika within the domestic setting of Serial Experiments Lain. She is portrayed as a stay-at-home mother who displays an extreme and consistent emotional detachment from her family, particularly from her younger daughter. Miho shows little to no maternal concern or affection; she is described as apathetic and indifferent to the lives and feelings of her daughters, and appears to actively dislike Lain, going so far as to refuse to interact with her for more than a few seconds. Her coldness contributes to the isolated and emotionally barren atmosphere of the Iwakura household, which serves as a backdrop for Lain's exploration of identity and the digital realm. Miho's role in the story is primarily as a component of Lain's dysfunctional family environment rather than as a character who undergoes development or drives the plot. She remains static throughout the series, never revealing motivations beyond a general disinterest, and her relationships are defined by distance: she is the wife of the computer-obsessed Yasuo Iwakura and a mother who is unconcerned with the well-being of either of her children. No special abilities or significant personal background are provided; her function is to embody the theme of fractured human connection in an increasingly mediated world, highlighting the lack of genuine emotional support in Lain's life.