The client is a middle-aged university professor majoring in design. He was his fifth home this time. His requests were clear from past experience. It was a universal architecture suitable for the final residence. 

In response to his desire to read and live on a spiral staircase, half of the floor space was turned into a spiral staircase. It is a simple plan, but when he goes to the study on the second floor, we fall into a mysterious sensation of getting lost in the maze. 

Five kinds of skylights bring various expressions to the room depending on the season, time and weather. It seems that the owner can spend all seasons comfortably because the insulation is put into the concrete wall.