Comic Market Ecosystem

A massive secondary creation and doujinshi ecosystem centered on the indie game Touhou Project. Developed through Niconico and Comiket, thousands of fan works are produced annually. The game developer's permissive stance toward fan creativity fostered a unique otaku community culture. Exemplifies Japan's doujinshi culture at its finest.

An annual doujinshi convention held at Tokyo Big Sight in summer and winter. A historic event continuing since 1975. Featuring over 10,000 participating circles and hundreds of thousands of visitors. Serving as a meeting point for doujinshi creators, illustrators, and fans with an economic scale of hundreds of millions of yen annually. Symbolizes the freedom and vitality of Japanese creative culture.

Comic Market (Comiket), a doujinshi instant sales convention running since 1975. Held at Tokyo Big Sight twice yearly with 5000+ participating circles and 500,000+ attendees, making it the world's largest event of its kind. As a hub for amateur to professional creators and secondary creation culture, generating hundreds of billions of yen, it's foundational to otaku culture overall.

Japan's largest doujinshi fair, begun in 1975. Held twice yearly (winter and summer) at Tokyo Big Sight. Over one million visitors attend, with tens of thousands of circles exhibiting. A venue for diverse derivative works across anime, manga, games, and original creations. Symbolizes the freedom and creativity of otaku culture.

The world's largest doujinshi (self-published works) fair, held since 1975. Taking place twice a year at Tokyo Big Sight, it attracts hundreds of thousands of visitors. As a symbol of creative freedom and diversity, it serves as a vital foundation for Japan's content industry.

A collective term for activities supporting one's 'oshi' (favorite idol, character, VTuber, etc.) through consumption. Encompassing merchandise purchases, concert attendance, Super Chat donations, and pilgrimages, the oshi-katsu market is valued at hundreds of billions of yen annually. As the core consumption behavior of Gen Z, it represents a new growth engine for Japan's economy.

Economic activity of investing to support specific characters, VTubers, or idols. Investment in 'oshi' (favorite characters) has become normative, forming a market worth tens of billions annually. Integrated fan investment behavior including merchandise purchases, live attendance, and game spending. Recognized as a phenomenon expressing the essence of fan culture in the digital age.