If you're hesitating whether or not to watch - just watch it. As mentioned in other reviews, the ending is a disappointment but watch it for the sake of falling in love with Sungjae's character. Story: The story is quite lit. There are so many cool, badass moments as well as pure comedy and touching scenes. If we don't take into account the ending, the story will be ranked high but the writers clearly thought that the story was becoming too predictable so they completely twisted it around, breaking the hearts of many. Prepare to be disappointed. The romance aspect of this show is completely absurd. I wouldn't say that Tae Kwang was a second male lead. Tbh, it feels like he gets the same if not more screentime than Yi Ahn. This makes things much more unpredictable. Acting: I've completely fallen in love with Yook Sungjae. His character is so lovable. So so lovable. Applaud the writers for his character development.Tae Kwang was the only character in the love triangle that I genuinely believe was in love. In some Kdramas you have those moments where the prince saves the princess or something and it's the turning point where the character realises they're in love. I couldn't sense that from Yi Ahn or Eun Bi. You. Will. Love. Sungjae. Kim So Hyun is so cool. It gives you actual shivers when you see a scene where the twins are together (as she plays both). It's to the point where I had to google whether Kim So Hyun was actually a twin because she's so amazing. The antagonist too omg when she smirked I just wanted to punch her face. You'll hate her. Music: I wanna reset... I wanna reset... so damn good. Watch it. If you want skip the last episode. Watch it because you'll fall in love with Yook Sungjae.