Yomiko is a bespectacled substitute teacher and an introvert. A Bibliophile, she prefers to bury herself in her books. She spends almost all of her income on books, and her "apartment" is stacked floor to ceiling with books. She resides somewhere in Jinbocho, a neighborhood of Chiyoda, Tokyo known for numerous bookstores. Though in appearance Japanese, she is in fact half-Japanese, half-English.
