"Stupidly Clever" may not fit, but it does make sense; that's King Kai's home, The Spirit World, lol.
That's been there every time Hecatia shows up in Berutasu's 4komas. The novelty wore off pretty quickly. (How does one remove a post from a pool?)
You know Onee-chan? Oh, that... That... Huh? Well, that's because...S... So... How did you know I am her little sister...?It's because of this thing...