The story is not 100% original but that's to be expected since the use of love triangles is a pillar of shonen romances, yet still manages to be amusing and good to read as a general romance.
The artwork of course is less "romance" and more "slice of life" and it fits surprisingly well with the story which is made even more amusing by the characters.
This manga might not make your top 10 list, but it is worth a shot if you want to try and get into shonen romance manga. Of course it isn't 100% harem/ecchi free but out of all the shonen romances I have read it's the closest one to being so.
