Han So Hee, although an excellent actress and really gorgeous, somehow rubs me the wrong way... and this makes it hard for me to see her as the drama's female protagonist. This could be due to her very realistic portrayal of a villainess in two dramas that I've watched: as a homewrecking mistress in The World of the Married and as an evil crown princess in 100 Days My Prince. Han So Hee in this drama is supposed to portray the shy and introverted Na-Bi... but let's pretend that she doesn't talk, there are no voice-overs and we just let her eyes do the talking. Somehow, to me anyway, she comes off as a someone with a hidden agenda... someone sinister who's hatching an evil plan. Must be her veiled eyes that seem to hide evil thoughts.
As to Jae-Eon... this guy is actually suffering from multiple psychological disorders: narcissism, weird phobias, hyperactive sexual urges and serious inferiority complex disguised as over confidence when dealing with women. I wouldn't put love in the same context as him because he is actually a sexual predator devoid of a conscience who victimizes naive, unsuspecting girls. And his excuse? It's all a game!!