Short and simple.

Given that it's seven chapters short and it covers a span of five years, the mangaka did a really good job. Actually I could say with all certainty that if it would have been longer it would have felt like it dragged don.

It's about what happens after, after the initial butterflies pass and all that's left is you with your significant other. The challenges they face and how to overcome them.
You don't feel lost even as time passes. You don't fall in love with the characters but you do feel for them and understand them.

The characters are regular people. They could actually be just a random couple you see everywhere. I hope that makes sense.
Nothing is exaggerated and it's easy to understand the cause and effect. The cause is what made me mad, just because you watch someone throw their relationship down the drain for no good reason.

It's worth a read and since it's seven chapters, why not?