This really was a bad one.
The story is completely shallow and boring, with even more boring characters - two childhood friends meet again after a long time, he being overly pushy (basically the playboy bad guy love interest from other shoujos) and she falling for it. They start dating pretty early on. That's it. Really, there is not more to it.
Their relationship doesn't get any deeper, instead, half of the content is completely build around the fact that her brother (huge siscon) does not approve of their relationship and constantly tries to meddle with them. The other half is them making out, so if you want to see a lot of kissing scenes (and some attempts to do more) then go for it.