[Machine Translation] A stay-home ever since the Edo period! Erda, an elf and Koito, a miko (shrine maiden), who are holed up in a shrine, are visited by an elf and a miko from Kanazawa! Tsukishima, Chuo-ku, Tokyo. Takamimi Shrine" has a history of more than 400 years since the Edo period. The deity enshrined there is Erda, an elf who was summoned from another world by Tokugawa Ieyasu and has completely withdrawn. The shrine maiden is Koganei Koito, a high school girl who tends to grow up. Koito's studies may or may not be of help to her, she is confused by a leak in the main shrine, and she is moved by images from her past on videotape.