You Haven't Seen The Best Of Me!

Sakuya and Yuuki are best friends in their second year of high school and are in dire need of excitement outside of school and studying. After finding out by chance that Sakuya's older sister and Yuuki's younger brother, Akito, are communicating online, Yuuki devises a plan wherein Sakuya poses as a girl to hit up Akito on the same social network. One things leads to another, and Akito invites "Sakura" (Sakuya's online persona) to meet offline. Thrilled, Sakuya accepts, knowing full well that he is going to have to do something about this Sakura/Sakuya discrepancy...

(Source: Futekiya)