Spring Day, or Shun-cu, is an [oban](/glossary/oban) woodblock print celebrating the arrival of the vernal season. The Japanese term evokes not just the calendar date but the full sensory experience of spring: warming air, budding branches, softened light. Iwata likely renders this through color choices that favor fresh greens, pale pinks, and the particular blue of spring skies in Japan. The oban format gives the seasonal subject room to unfold at a natural pace, the composition breathing with the same expansive quality that the first warm days bring after months of winter compression.