Rsession
Rsession is a Kyoto-based architectural design firm led by Masayoshi Setogawa.
Last updated September 2, 2026
Overview
Rsession is a Japanese architectural design firm based in Kyoto. It was established in 1987 as 株式会社設計網アールセッション and renamed to 株式会社アールセッション in 2006. The firm is led by Masayoshi Setogawa, a registered first-class architect.
History
Rsession was established in 1987 as 株式会社設計網アールセッション and renamed to 株式会社アールセッション in 2006. The firm is led by Masayoshi Setogawa, who was born in Kyoto in 1953 and graduated from Kyoto University's Department of Architecture in 1977. He worked at Nippon Telegraph and Telephone Public Corporation before founding the firm.
Sources
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