Your sister has been having a crush on this certain campus’ heartthrob, Jang Hyunjae.

Somehow he’s in the same major as you and coincidentally is also your co-worker at your part time jobs.

How surprisingly is that, he also likes her back, yet doesn’t have the courage to confess it to her face.

So in order of trying to be a good ‘future brother-in-law’. Hyunjae decided it’s best to ask her brother for some advices, aka, you.