Seijo 6 is a distinctive residential complex completed in 2000, designed by architect Yokogawa Ken of Yokogawa Design Workshop. Located in Tokyo, this terrace house project exemplifies contemporary Japanese residential design through its thoughtful integration of individual dwelling units within a unified architectural framework. The development demonstrates the architect's approach to creating cohesive communities while respecting the autonomy of individual homeowners. With its refined spatial planning and consideration of both private and shared spaces, Seijo 6 represents an important exploration of medium-density urban housing solutions that balance intimacy with community connection, making it a notable example of early 2000s Japanese residential architecture.