This fic is set in an alternate universe, where the 5 guys and Zechs are students at a boarding school. Treize is a graduate of said school. I took liberties with their ages -Treize (college freshman) is one year older than Zechs (HS senior), who is 2 years older than the other guys (HS sophomore).
One also might wonder how a high-school sophomore is going out and drinking alcohol at a club. Well, when I started writing, this wasn't alternate universe. It became AU when I got to about chapter 3. By that point, I couldn't change it, so I left it in. So, how about I fudge a little and say it's in Europe, where drinking ages are more sane, and never mind that the school systems are a bit different? ^.^;;