SAI-KAI provides residential design that redefines modern "Wa" (Japanese style), where the strength of inorganic exposed concrete resonates with the warmth of organic natural wood. Cherishing the "Yohaku" (white space) of the space woven by light and shadow, we create a residence where you can enjoy the passing of time with your five senses. Going beyond simple living space, we construct the optimal architectural solution that resonates with the sensibilities of the resident and will be loved eternally.