Wow. This drama was amazing. I had been putting off watching this because I read a forum where people thought it was overrated, they couldn't have been more wrong. First of all the story was so heart-wrenching but sweet. I loved that it seems like a comedic melodrama, they infuse the pain with humor to make it go down a bit easier. Other melodramas that I have watched have made me just miserable the whole time. But with this there was always a light in the darkness. The first half of this was like a romantic comedy, I was laughing like a loon. But even when things get heavy theres always a glimmer of that comedy. The acting was amazing from Ji Sung! He took on all the personas and it really felt like you were watching a completely different person. I had first seen him in Protect the Boss where he also did an amazing job but his acting here is flawless. He made me feel genuine affection for each and every alter ego and made me tear up when they finally departed. Shin Se ki was my favourite alter ego followed by Ahn Yo Na, I could seriously watch a drama based on Shin Se ki alone, his intensity was amazing. I absolutely loved this drama. I can definitely see myself rewatching this. I'd recommend this to anyone who loves melodramas, psychological romances and even comedic romance. Just be prepared to laugh, cry and smile.