Answer
Natsume Sōseki's portrait has been appearing on the Japanese 1,000 yen note since 1984. Sōseki was a Japanese novelist who is considered one of the most important writers of modern Japanese literature. His work often explores themes of alienation, isolation, and the search for meaning in life. Sōseki's portrait on the 1,000 yen note is a reminder of his important contributions to Japanese literature and culture.