This is the first drama or movie, in any language, that I started watching for the second time as soon as I finished it.

Normally I try to avoid dark, realistic, depressive story, especially ones with violence and infidelity. I started this months ago simply because of IU, who played Jang Man-Wol in Hotel del Luna. I couldn't get past half of the first episode, and switch to Crash Landing on You and It's OK to Not Be OK.

I continue My Mister and after the episode 4 I just couldn't stop. It made me cry, smile and laugh, both with compassion and happiness.

The production is great. PD really paid attention to every minute detail.

The Story is extraordinary, and like they said in the interview, it's not a love story, but a human story. It is anything but cliche.

All acting are excellent, from lead characters to all the supporting characters. The dynamic of three brothers, the similarity of lead characters and how they came to understood and healed each other as the story progress.

The visual effect is good, I like the makeups, costumes, and uses of traffic lights to indicate relationship status (not sure if that's intended).

OST are outstanding, particularly Adult (Grown Ups), Dear Moon, and An Ordinary Day. I don't understand Korean, so I have to get the translation and found the song "Dear Moon" so accurately describes Lee Ji-An's feeling for Park Dong Hoon.

The ending is very good. Yes it's an opening end which leaves the viewers to decide the real ending themselves.