Co-operative apartment houses with 12 dwelling units. Since the site is an undulating and greenery area of ​​Tokyo Yamanote, we aimed to attract cherry blossom trees on the front road and green spaces on the premises of the neighbor to the hand while exchanging gaze. The dwelling type is 7 flat type, 2 maisonette type, 3 triplet type including rooftop penthouse. They are complicatedly combined like 3D puzzles.