These are most often seen in large scale Tenshu and the earliest ones were built with hiyoku irimoya hafu instead of oirimoya gables, neatening any distortions in irregular plane surfaces.
規模の大きな天守に多く見られ、初期のものは、大入母屋の代わりに、比翼入母屋破風を造り、不整形な平面からの歪みを整えた。