Shimotsuke Kiyotaki 18
The Shimotsuke Kiyotaki rods work where others won't.
From the very beginning, I have recommended fishing with the longest rod you can get away with. On some rivers, you can get away with very long rods (and you can find rods as long as 7 meters on TenkaraBum.com). However, on some streams even a 7 foot rod is too long.
For years, people in the Southeast and Northeast US would scoff at the very idea that tenkara was meant for small streams. They would point to streams where you couldn't even extend an 11 or 12 foot tenkara rod, let alone fish with it. For years, I carried the Shimotsuke Kiyotaki rods for just those streams. And for years, no other US company had rods shorter than 11'.
The Kiyotaki rods come in a wide range of lengths, but the one that works where others won't is the shortest one, the Kiyotaki 18. The Kiyotaki 18 is right at 6'.