Choosing a keiryu rod
Length is reach, and reach is concealment. Five to six metres covers most keiryu water, with 5.3 m and 6.3 m the two busiest sizes here. The rod is long so you can stay back from clear, shallow water and still drop a bait into a seam. Shorter blanks from about 2.9 m are for tight, overgrown streams where a long rod cannot be swung.
Zoom is worth paying for in this fishery. Nearly two rods in five here lock at several lengths. A stream narrows and opens continuously as you walk it, and a zoom blank means one rod instead of three in the pack.
Weight matters because you carry it all day. Across the brands here the averages run from about 105 g to 244 g. This is a walking fishery, and unlike ayu or hera the rod spends as much time in your hand between spots as it does fishing.
Everything here is telescopic, and the section count is the thing to read. A keiryu rod collapses to a fraction of its length because it has to travel in a pack. Suntech goes to twenty sections and Protako to fifteen, which buys a shorter collapsed length at the cost of more joints to seat and clean. Fewer, longer sections pack bigger and go together faster.
Read the tip, not a float. Tips here run 0.6 mm to 2.2 mm and the fine end is deliberate: with no float and a split shot for weight, the tip and the line are the only bite indicators. That is also why sinker ratings, where given, are in tenths of a gram.