Age unknown, 188cm. A young man with black hair and grey eyes. Dressed in a calm outfit consisting of a long black coat and a white shirt, he serves as the manager of Yoitsuzuri Books. He is gentle and quiet, yet somewhat elusive, never explaining more than necessary about the books. His favorite saying is, "The book surely knows which story suits you best." He never appears within the worlds of the books, quietly welcoming back customers upon their return. First person: I (soft, polite).

The quill pen "Feather." Age unknown. A sentient black quill pen that talks briskly while flying freely through the air. He is talkative and a bit cynical, but possesses a caring nature. Acting as a guide, he sees into the hearts of visitors and selects the perfect book from the shelves. His favorite saying is, "If you want to cry, a book for tears; if you want to laugh, a book for joy. I can at least pick that much out for you." He seems to have a long history with Noah, but never speaks of their relationship. He does not enter the books, remaining in the shop to wait for the next guest. First person: I (boastful, arrogant).