Sketch of Territory, also known as the Taruii Residence, is a residential masterpiece completed in 1983 in Setagaya, Tokyo. Designed by architect Kenji Yokogawa of Yokogawa Design Studio, this residence exemplifies refined minimalist design principles. The house demonstrates a thoughtful approach to spatial organization and material expression, creating distinct territorial zones within the dwelling. Through careful composition and strategic use of architectural elements, the residence achieves a harmonious balance between functionality and aesthetic expression. This work represents an important example of Japanese residential architecture from the 1980s, showcasing innovative design thinking during a pivotal period in modern Japanese architecture.