Jalsaenggimyeon Oppa

Oh Sun-Hui wins a chance to attend her favorite actor, Yoo-Il's, autograph session by donating her bankbook. To think she'd actually get to meet her favorite, with his perfect voice and face, in person! But when it's finally Sun-Hui's turn to get his autograph, Yoo Il reacts coldly...

*"Um, Oppa..."

"Are you sure? Am I older than you? Don't you remember me? Park Yoo-Il, Class 1, Grade 3?"*

The oppa she was a fan of turns out to be her middle school classmate?!

(Source: Naver Series, translated)