The House of Ink, completed in 1974 in Roppongi, Tokyo, represents a distinctive residential and office hybrid designed by Itami Jun Architectural Design Laboratory. This innovative structure seamlessly integrates living quarters with workspace, reflecting the evolving needs of urban professionals during Japan's economic expansion era. The building exemplifies the minimalist aesthetic principles prevalent in 1970s Japanese architecture, characterized by refined material selection and spatial efficiency. Its thoughtful design demonstrates how residential and commercial functions can coexist harmoniously within a single structure, making it a notable example of adaptive architectural solutions for contemporary urban living.