Overall: 9/10 (because the story has yet to advance far enough for me to give a perfect score)
As of Chapter 4.5:
This story is really cute, much like Gekkan Shoujo Nozaki-kun, but with a developing relationship instead of a crush. It also has a pair of side characters that seem to have a very good relationship.
Characters are really relatable and very cute. Hirotaka (main male) is a little dense occassionally, but not to the extent of ignorance, so he won't make you annoyed at how nothing seems to be moving in the story.
The main characters were originally friends before they became lovers,
so the relationship was not rushed, but seem to developed at a reasonable pace thus far.
Art is clean and beautiful and the occasional coloured pages only add on to the beauty.
The story made my heart dokidoki because all four characters were simply adorable.
So please give this manga a try!
(will update this review as the story goes)