Principle Co, Ltd.

Principle Co, Ltd. is a digital marketing agency based in Tokyo that specializes in helping international brands enter and expand within the Japanese market. The agency serves clients including Adidas, Arc'teryx, H&M, and Toys'R'Us with bilingual support, delivering campaign reporting and internal communications in English while managing Japanese-language strategy and execution.

Principle's team comprises advertising consultants, SEO specialists, and data engineers who take a metrics-driven approach to digital marketing. The agency holds partner status with Google, Meta, Yahoo Japan, and Criteo, enabling comprehensive campaign management across major platforms. Their services span paid search, social media advertising, search engine optimization, and performance analytics.

Principle is best suited for American and European brands seeking to establish a presence in Japan with a dedicated partner who understands both local market dynamics and international business requirements.