Freen wipes Becky's spoon. Open a bottle cap for her. Buys her favorite milk tea. Calls her precious. Princess. Angel. But always ends it with "my little sister." How do you confess to someone who only sees you as a sister? How do you let go when your heart refuses to? And how much courage does it take... to finally wake up from a five-year dream you never wanted to end?

Freen and Becky have been best friends for as long as they can remember. They grew up next door to each other, went to school together, shared almost everything, and became so close that neither of them could imagine life without the other. To Freen, Becky is simply her best friend. The person who always saves her a seat, worries when she gets home late, steals food from her plate, argues with her over stupid things, and somehow always knows when something is wrong. And to Becky? Well... Freen is Freen. Everything between them has always been normal. At least, that's what they thought. Until Heng comes along. When Freen starts spending more time with him, Becky suddenly isn't acting like herself. She's annoyed when his name comes up, finds something wrong with practically everything he does, and seems determined to remind Freen that she doesn't trust him. Becky calls it being protective. Freen isn't so sure. Because best friends are supposed to want each other to be happy... right? So why does Becky look at her differently whenever Heng is around? Why does every conversation about him turn into an argument? And why does the thought of Freen falling in love with someone else seem to bother Becky more than she's willing to admit? Maybe some feelings don't appear overnight. Maybe they've been there all along. Hidden underneath years of friendship, inside jokes, stupid arguments, late-night conversations, and all those little things neither of them ever thought meant anything. Sometimes the hardest person to fall in love with... is the person you've spent your whole life calling your best friend.