Iwashi, Hakumei's big brother in the Rock Piercing Association, is usually a man of few interests and even fewer cares. But to everyone's surprise, he starts asking about a book about a cow--which sets a major series of events in motion! Plus, check out a guide on how to fillet a fish bigger than yourself, witness a collaboration between Jada and Carnelian, and see the true face of the mysterious bartender Shunka!