This must be an ongoing manga meaning the drama probably ended in the middle of the manga.

Anyways....

Male Lead - good looking, sweet, devoted and dedicated though not sure these are all positives in his character. I like that he is honest with his feelings, he is truly proud of his girlfriend. Straightforward, no pretending that he doesn't know that the other girl likes him and tells her straight out that he is in love with this girlfriend.

Female Lead - annoying dedicated to her job that she comes off as being insensitive, there is no balance at all. She just drops Richii whenever she gets a call from work (and he is also soooo annoyingly understanding!) I mean really she reads his messages but does not even acknowledge them. Yes she is sweet when she finds the time for him.

One thing that this drama was good for, there were no misunderstandings - if they are jealous they say so!

This was a short drama good for watching during my lunch breaks, since you don't really need to concentrate on the story too much.