Hiroshi Yuki’s personal website brings together the books, writing, and activities of the Japanese author, whose career as a writer spans 30 years and includes more than 60 titles. Best known for the Math Girls series, Yuki also writes about mathematics, programming, cryptography, software design, and the craft of writing. His books range from accessible mathematical stories for young readers to practical guides that explain mathematical thinking, group theory, encryption, and Java design patterns. His work has received the Mathematical Society of Japan Publication Award.

The site also features Yuki’s weekly newsletter, a monthly news update, online writing, a mathematics column, work logs, and opportunities for informal online conversation. Readers can explore essays, technical notes, stories, reader responses, and material about the Bible and prayer. Other offerings include digital publications, original merchandise, and question services. Written for people interested in learning, teaching, and thoughtful writing, the site serves as a central guide to Yuki’s books and ongoing work.