KGM2 is a house in Fukuoka by micelle, organized around a precise strategy for managing light and ventilation through the specific conditions of its urban site. The building's square plan is rotated 22.5 degrees from a north-east axis, a move that uses the angular difference between the building and the street grid, combined with the level change between the house and its neighbors, to allow morning and evening light in while blocking afternoon sun. The color temperature of the light entering the building therefore shifts through the day as the angle of the sun changes.

Light enters the interior twice. High window openings are fitted with transparent corrugated polycarbonate sheet, which partially scatters and spectralizes the incoming light before it reaches the interior. From there, sloping frosted glass windows receive the light again and diffuse it further, so the interior is lit by 2 successive filters rather than direct solar radiation. The openings are positioned in the 4 corners of a notched perimeter, not in the walls: there are no windows in the wall surfaces themselves. The corners concentrate daylight where 2 facades meet, and the wall surfaces remain uninterrupted.

Ventilation works through a similar logic of deliberate displacement. High windows connect a ventilation cavity in the roof and exterior walls to the interior, allowing hot air to be drawn out by displacement ventilation, gravity ventilation, and wind pressure differentials through the cavity. Vertical sliding windows at specific positions create localized pressure differences that drive a ventilation ring through the building. The exterior form includes a gouged or concave shape, a reference to a lacuna device traditionally used in Kyoto architecture to ward off evil spirits, which here functions as part of the building's passive ventilation strategy.