Author-  WhatsOnTheCeiling

Length - 26 Chapters

Status -  Completed

Genre -  Fluff / Romance / Slight-

Summary 

Two Jocks, two council members, one clumsy president. With a school rivalry between SM and SME, infiltrating their enemy's school was the last thing Jonghyun and Minho could think of doing midway through their senior year. When a paranoid president on the verge of breaking down, Siwon sends the boys off to retrieve information he can use as blackmail on the illusive SME hacker. The boys enter the school overconfident, But two council members won't hesitate to put them in their place.......

(completed /  30 chapters )

One of the very first stories I read on aff.