Struggling boutique bookseller Luhan hates Oh Sehun, the owner of a corporate OhBooks chain store that just moved in across the street.   

From the moment he was born, Sehun has had the sound of his soul mate singing echoing through his head. And he intends to find the keeper of his heart.

I swear I'm never coming back again...

Sehun would do anything for his daughter. Even if it included pursuing her daycare instructor. Regardless, it's not like Sehun would mind pursuing him.  Although, things aren't as simple as they seem..  

Sehun didn’t mean for it to go this far. But really, when his crush since forever (10 years is a really long time, okay) was suddenly dating someone that wasn’t him, drastic measures had to be taken. It also doesn’t help when his crush is also his next door neighbor.   In which Sehun is a little too obvious, Luhan is a little too oblivious, And poor Jongin just wants to read his book in peace.