The show is not worth watching. I saw it because I am an Aroha and for San-ha. They have used San-ha as a bait. He get just about 15-20 seconds screen time in each episode while show was promoted on his name. His character was shown dumb, in the trailer he's this big celebrity and in the drama he's roaming around like a love sick fool who is entitled.
The FL is supposed to strong but she's plain rude and hypocrite. She doesn't have strong attitude she just insults other people and think I give back to them. This drama is like you are watching a fan fiction. There are girls who don't like FL and try to ruin her day because they like San-ha. FL doesn't believe in love and refuse to date and the next day she's falling for someone online. She's A-level hypocrite, she wanted to take revenge so she used someone's crush on her and someone else did the same she was sad. I agree using someone for revenge is bad but why your feelings are worth and not someone else's ?. And she would not give any one her time of day ( online friend was her known someone ) and the identity of her online friend is revealed she suddenly starts liking them. When she gets to know she was used as revenge half of the episode is her being sad but you didn't get to see the sadness of someone she used for more than 10 seconds.

Acting: I am no one to judge anyone's acting when I myself don't know anything but I liked San-ha's acting. Fantagio should invest in him as an actor in good dramas like it invest in Eun Woo. San-ha has ability.

Music : music is nice it would give you some good songs for your actual playlist.

Re-watch value: i wouldn't watch it again even if leader Jinjin would come and say to watch it. It's all cringe.