Does Ryoko have a tail?
No. We’ve had many opportunities to see Ryoko completely naked in various onsen (which roughly translates as “bath-house”) scenes, and she doesn’t have a tail in those. The tail appears to be part of the dress she wears when we see the tail. At this point, many people say “But the tail moves…” Ryoko has some telekinetic abilities (most impressively demonstrated in OAV #6, “We Need Tenchi!”), so she can easily manipulate the “tail” that way.
