To me, this series felt like a higher rating than the sum of it's parts (technically, more like a 9/10 but enjoyable and satisfying enough to be one of my favorites). It was like being wrapped in a cozy blanket of hopeful sincerity. It's slice-of-life with a focus on feelings and while there are multiple emotional moments, there's no big drama (other than school bullying at the beginning). I enjoyed every minute and will watch again.

Notes on general differences from the manhwa at the bottom of review.

There are eight 25min episodes. I liked that we got to see HaeBom and TaeSung's story over a couple of years even though the time constraints meant that time passed quickly. The passing of time was slower in the beginning so it was easy to understand and connect with the characters and watch the transition of their bond into something more romantic. Then time jumps became a little bigger and more frequent but still retained character arcs. The mother's arc near the end felt the most rushed but it still worked; it feels like she would have gotten to that point anyway so doing so quickly didn't really break character.

I would have loved to watch more details of HaeBom and TaeSung's relationship as it unfolded, but was still very satisfied with what was shown. The staying power of their bond is reiterated over time so their happy ending and hopeful future is believable.

Their dynamic may seem stereotypically simple and unbalanced at first, but over time it's demonstrated how their strengths compliment each other's weaknesses and they balance each other well. They also put effort into understanding each other. Fondueforkharpoon's review expands on that and pretty perfectly sums it up.

There is a lot of skinship and cuddling and a couple passionate kisses.

While HaeBom was adopted by his mother's friend when he was 7 and grew up in the same house as TaeSung, I appreciated that the story *didn't* feel like a fetishization of brothers.

I enjoyed the friendship that the side characters YongHee and JiAh had with TaeSung and, over time, HaeBom. They were very much supporting roles but still felt like real people, not caricatures.

Cinematography was often soft and lovely, though some of the handheld camerawork was a little unsteady for my preferences (the constant small movements felt like maybe it was done on purpose to underscore high emotions but I found it distracting). Music fit scenes and emotions well.

Notes on the manhwa:
General Spoilers below.
The show follows vol.1 very closely then makes a few adjustments when incorporating vol.2. The show smartly makes the give and take between TaeSung and HaeBom clearer and more balanced, which I love. The one thing the show left out that I felt missing when I watched it (before I even read the manhwa), was the Mom's concern that TaeSung forced HaeBom; that HaeBom was in a position where he didn't feel he could say no. That's one of the Mom's biggest issues in the manhwa.

The show also integrates their growing physical relationship smoothly and believably once they start living in their own apartment. The manhwa on the other hand, is very chaste except for some kisses for vol.1 & 2, while vol.3 is mostly all R rated scenes (which are well done, by the way, and focuses on the progression of their physical intimacy). I've just started to read vol.4 and it seems to be bringing in more plot from the world around them again.

Fondueforkharpoon has a wonderful review that says other things I was thinking as well.