Obunsha, founded in 1931, is an educational publisherspecializing in study guides for entrance exams, children'sworkbooks & reading materials, prep books for certificationslike TOEIC, TOEFL, IELTS, and dictionaries, publishingabout 200 titles annually. Beyond publishing, it significantlycontributes to Japan's education industry by sharinginformation gathered from domestic universities. Notableworks include the "Essential Things They Don't Teach You inSchool" series, adapted into an anime in 2025 with 50volumes published and over 4 million copies sold, and the"English Vocabulary Target" series, a long-selling vocabularybook highly favored by exam students since 1984. Obunshaseeks to export publishing rights and partner withinternational publishers.