You'll need a spool of fine tippet material to connect your fly to the end of your tenkara line. Moonlit's monofilament tippet is of very high quality and comes on a very thin, stackable spool. Tippet is secured by a red elastic band that allows easy unwinding.
4x tippet (6lb breaking strength) is recommended for most tenkara rods. 5x (4lb breaking strength) works well for tiny flies or very light rods.