Many cupid know their ULTIMATE RULE and that is.. NEVER EVER FALL INLOVE WITH A NORMAL PERSON. That's why any cupids can't even say the word "I LOVE YOU!" to the persons they love because they are forbidden to burst those words out. What will Ms.Cupid or Lee Chaeyeon do if she realize that she's inlove with a normal person that has a name Kwon Eunbi? Would Chaeyeon just let her feelings for Eunbi grow more even it's forbidden?Or she will just stop her feelings for her?