The "B" designation of this one hundred twenty-first iris by Sugiura Kazutoshi indicates a variant or second state of the composition — a practice that reveals his working method. Rather than treating each numbered iris as a single definitive statement, Sugiura sometimes produced multiple versions of the same compositional idea, exploring how different color combinations or printing sequences altered the character of an otherwise identical arrangement. The variant designation makes explicit what is implicit throughout the series: each number is not a destination but a waypoint in an ongoing investigation.