The source of the name “BOKOROSUI” refers to the phase from a classical Chinese poem. The piece is made by using a hand-forming technique and sculptural process of trimming, which is the traditional style of Raku ware. From the notched lip to the right beside the trimmed foot, a shiny black glaze is painted contrasting with the underlying tone of the transparent glaze, and, from the notched lip to the trimmed foot, a light cobalt glaze is painted. The sequence of the glaze sceneries looks like a large lake re-celebrating the colour of the firmament appeared overhead after a gale wiped off the white raindrops falling from black clouds. The work is one of the “Ha no HA” series.