Hakusan-Kaku, completed in 1991, stands as a notable office building located in the Hakusan district of Bunkyo Ward, Tokyo. Designed by the collaborative efforts of Okada Shinichi Design Office and Hitachi Construction Design, this structure represents the architectural sensibilities of early 1990s Japanese design. The building showcases refined commercial architecture suited to Tokyo's dynamic urban landscape. Its strategic location in Hakusan places it within a historically significant area of the city, making it an important addition to the local architectural fabric. The professional design approach by both firms demonstrates sophisticated planning and execution characteristic of major Japanese architectural practices during this period.