Jongin's a man who wears his heart on his sleeve, so it just makes sense that he'd end up wielding the interdimensional Heart wand as a guardian of the sun. And by what seems like fate, he ends up meeting another guardian named Kyungsoo who has the brightest heart-shaped smile and a way of making his heart flutter.

The classic story of how first impressions can actually be wrong sometimes.

Kyungsoo's sense of vampires lurking nearby is never wrong, so on this regular old day he quickly has to come to terms with two facts of life. Looks can be deceiving and people (or well, vampires) can always surprise you. Good thing he hunts vampires for a living otherwise this would be a completely different story.

This Valentine's Day, Jongin finds out that it's not just his heart that's been stolen but a rose as well. And that his locker neighbor and crush Kyungsoo may just have something to do with it.

A relaxing morning on the beach leads Kyungsoo to the discovery of something magical when a handsome man washes ashore without a name and without a home.

Jongin and Kyungsoo are just best friends whose mutual friends think that they're together. For some reason, Kyungsoo wants to mess with them and so asks Jongin if he'd like to be his fake boyfriend for a day. And Jongin, being the lovesick man that he is, agrees to it.

Kyungsoo ends up falling for a sweet man named Jongin at his local crêperie. And he realizes that maybe having a slight crêpe addiction isn't such a bad thing after all.

A quick race at the start leads to a slow race for the heart. It's the day of the big relay race and Jongin's finally found what he thinks is the perfect time to confess his feelings to Kyungsoo.

Jongin's always felt content working as a star-maker, and after working a full millennium as one, he feels like nothing could surprise him anymore. That is, until he learns that a real star walks among him and his co-workers. And that a newcomer named Kyungsoo might as well be one with the way that his bright smile lights up Jongin's heart.  

Jongin doesn't know exactly when he fell for Kyungsoo. But what he knows for sure is when Kyungsoo fell for him...or at least, next to him.