Cappuccino is an enjoyable light josei read.

The story is based on a realistic premise and develops with realistic action. Despite that, girls will feel enough empathy for the protagonist to feel suspense and read the next chapter for developments in the relationship.

The characters seem realistic as well, but the manga does not explore the emotions deeply enough to compensate for their realistically limited transformations. On one hand, this makes the characters (especially the protagonist's lover) seem slightly flatter than they might be ideally, but at least it's a change from the heavy dramatic tone of a lot of other josei manga.

As it is only 7 chapters, the pacing seemed a little quick for a story that spans 5 years. The author does a good job of limiting the choppiness, though, and if it had more chapters, the story would seem drawn out.

Overall, it's decent. You won't connect deeply with the characters, but you will be drawn in. Cappuccino will leave you with a tinge of bittersweet, like the faint smell of coffee beans. :)