I love the use of 'Three Tone Blond' and 'Codename: Smiley Friend.' It's such a little thing to adore, but it's so...age appropriate. I think this au is very age appropriate without being ridiculous or childish, and I give you mad props for that. Ditto for the entire scene in the fast food restaurant, with Key asking Minho to update him on Three Tone Blond's status every 5 seconds.

I really enjoy your writing, so I'm looking forward to more :)