Very hilarious. If anyone thought to flame you over this, then they are a prude. Even I did underage drinking...however I was also lucky to go to other countries where the legal age was lower than in the US.

Souta is a deviant bugger...lol. Nice prank, though I am sure InuYasha will get him back. :)

Author's Response:

I don't expect much of a problem.  The other author I mentioned had a problem because she portrayed smoking pot as "cool."  I thought it was simply a realistic portrayal of what happens when kids do marijuana recreationally. I think underage drinking is more acceptable in this country than smoking pot, even though drinking too much is arguably more dangerous. 

Yeah, I worried about Souta being out of character, so I did my best to make the prank seem natural to him at the time.  Thanks for your kind words.  I'm trying to think of Inuyasha's payback as we speak, but I don't have a final thought yet.  Thanks again for the comments.