My 4 categories are Acting/Cast, Writing, Direction/SFX/Music, Entertainment Value.

Wow, I was not expecting all the hate on this drama. When you're dealing with brain tumor plots, you have expect a certain degree of a lack of realism. So I was prepared for it. A friend asked me what genre this drama is and all I could reply with was "Swoonworthy". I typically wouldn't watch this type of genre these days, since I'm more interested in compelling stories and characters over visually appealing cinematography and attractive leads. However, this drama took me by surprise.

Acting/Cast: Easily the best thing about this drama -- a great cast with even better acting. Surprisingly, my opinion of actors that I previously didn't think highly of, changed for the better due to their performances in this drama (Kim Soo Hyun, Kwak Dong Yeon, and Lee Joo Bin). Yes, the actor who played the grandfather wasn't old enough for the character, but it's not a big deal; he's really a minor character. The best acting, and ultimately my favorite character to watch, came from Kwak Dong Yeon (곽동연). Kim Yang Gi, a minor supporting character played by Moon Tae Yu (문태유), was also a favorite of mine. I would say the entire cast - from main characters to minor supporting characters - brought a charm to their characters, which made them all quite likeable and enjoyable to watch. The chemistry between cast members is somewhat reminiscent of how I felt watching Twinkling Watermelon. They all see to have had a great time filming. 10/10

Writing: The writing was some of the best I've seen..."was". This drama had such a strong start. It stayed strong up until around episode 14 or 15. I was thoroughly impressed. I like the concept of the plot and I like the character building for the various characters throughout the drama. However, the writing starts to veer off course towards the end. It goes full makjang with craziness, unrealistic events, and of course our favorite clichés that have been around for so long. I expected that I would need to suspend some amount of belief for the sake of this plot, but even being prepared, the story still became a bit too ridiculous. I would have liked the villains to be more in the background and for the focus of the plot to instead be on the leads repairing their marriage, the families coming together, and discovering what's really important in life (with the villains simply being the catalyst for this growth). Basically, a family healing drama similar to Welcome to Samdal-ri, but better in every way. With less attention on the villains, I think the important characters would have been able to be fleshed out a bit more and they could have delved more into understanding how their marriage went wrong and how to fix it. It could have been a good learning opportunity for viewers going through similar marital problems. 5/10

Direction/SFX/Music: It looks and sounds nice. The OST is not bad. I was surprised that I like some of the songs. It could use some variation though. 7/10

Entertainment Value: Highly entertaining as long as the topic was on character/relationship building, especially during the first half of the drama. However, there's some dragging towards the end. The things I cared more about were glossed over in the end (too much BS with the villains). 6.5/10

Overall, I gave this drama a 6.5/10. Really, I could justify a rating from 6 to 7 out of 10, but I've settled for a 6.5/10. This is mainly due to the craziness towards the end, too much wasted time on villains and politics, and because this drama didn't put me on the edge of my seat (or have a crack drama vibe), nor did it have as much charm as Goblin or Crash Landing On You (although it came very close). But it's a good drama; it achieved such high ratings for a reason. This drama saved me from falling into a drama slump and now the baton is being passed to Lovely Runner.