iroshizuku ku jaku

Pilot Iroshizuku Ku Jaku is a vivid deep teal that shifts between blue and green, with excellent shading and occasional red to red-black sheen on suitable paper. It is smooth, wet-flowing, and relatively quick-drying, making it especially appealing for journaling, expressive writing, and medium-to-broad nibs; its low water resistance makes it unsuitable for archival or official documents.