The sublime simplicity of this series is a far cry from Finnjuhl earlier furniture designs and is inspired by traditional Japanese building techniques. The solid horizontal backrest, resting on the slightly tapered legs, is a reference to a Japanese temple door. The backrest ends in a circular recess, adding an optically refined impression with great effect. The most famous example of this cooperation is probably the Japan Series from 1957, which consists of an armchair, a footstool, a two-seater sofa and a three-seater sofa.