The more of Rei you see, the more you understand why Lum dumped him. Too bad Ran can't see that.
It's funny how Rei kept changing back into his humanoid form every time Kurama looked at him. Was he actually self-conscious? Was he doing it on purpose? Cause if he did, that'd make it way funnier.
Also, at this point, it should be no secret that Ran is an alien. Yet I don't think there was any particular chapter or a scene where Ataru or the others outright acknowledged that she was an alien pretending to be human for a while. It's odd. Did Takahashi forget about this? We may never know.