I have to give this work some credit. It's got a lot of heart, and some creative ideas. The mangaka was clearly fixated on the idea of forbidden romance, and it's explored a few different ways. Unfortunately, none of the stories have complete endings, so you end up scratching your head thinking, "Wait, that's it?" You want an answer, but it's not going to come. All the stories start like how they ended, with subtle slices of life that seem to just pick up as suddenly and quietly as they began.
To break it down more clearly,
Story 1: the title story, Chapters 1-3. Don't expect an epic, dramatic finish, because it never comes. However, there are plenty of sentimental and thoughtful moments. It does give you a lot to think about, and for what it is, it's enjoyable.
Story 2: Ch. 4, about a young man who goes looking for his missing uncle. In his search, he finds something surprising. This one appears to be somewhat pointless (it's not as sentimental or developed as the other stories), but it serves as a more light-hearted break from all the angst of the first one. And of the endings, this an amusing one.
Story 3: Ch. 5, a story about an uncle and a nephew who are not related by blood, and surprisingly, around the same age. The fact of them being related seems to only add a subdued conflict to their relationship, as it leads to a somewhat rushed ending of the story. But the ending's not disappointing, it just feels sudden and unresolved, much like the first story.
Story 4: Ch. 6, a story about a man who travels to a beach to explore the local lore surrounding a mermaid and her son... This story has great potential, but feels very under-explained. I wanted to know far more than what the story revealed, and I had questions without answers at the -once again- sudden ending. The ending is a bit open, and I normally don't mind that, but it's very disappointing to not be certain of what's true or not.