The Elf of Tokyo Koito Koganei is the miko of the Takamimi Shrine and cares for the goddess Takamimi Hime no Mikoto, who in reality is a hikikomori otaku elf named Elda who was summoned by Koito's ancestor 400 years ago. Despite this, Elda is beloved by the locals. Koito has vague memories of a woman in white from her childhood who helped her cope with her mother's death. Koito suspects Elda is popular because her immortality makes her a comforting presence. Koito later learns from Elda she became a hikikomori after a child insulted her 60 years ago...