Oh yes! That one caught my attention as well--of course anything with youkai!Hakkai pushes all the right buttons. (By the same token, I'm also half-tempted by the tentacles prompt, if only because tentacles vs. vines crackfic would be so much fun to write.) ^^

There are so many prompts that I think are quite brilliant, but I don't think I could do them justice. It makes me a bit sad when they go unclaimed. I guess that's why it's nice that the prompts that got left out carry over to the next round for a second chance.