The Love's Red Signals

Nae and Shuji were chidhood friends, but they havent seen or talked to each other in years. Shuji takes it personally while Nae is only keeping her distance because everytime she sees Shuji, her crush, she gets a nose bleed. So what's Nae suppose to do when her and Shuji get assigned to the same homeroom, moreover they're both elected to be the class representitives?!