This is... definitely one of the most interesting premises of a manga grounded in the real world, ever. This story is about a man who decides to introduce his girlfriend to his best friend, and in only nine pages, manages to go through what is... almost definitely the most traumatic thing to ever happen to this guy, I think.
Uhm. The characters work for the little bit they are there, given that there are only three of them. There is the main guy, who is hopelessly in love with his girlfriend and can't see why people would think it is 'wrong,' even though it is most definitely very very very wrong. There is the guy's best friend, who is incredulous and for some reason stays around the main guy anyways, but shows a realistic level of 'what the fuck.' And there is his girlfriend, of course, who has no personality to speak of.
The art is clean, and even though it was short, you can see the the manga artist didn't cut corners, though I'm pretty sure he spent the entire time going why the fuck am I doing this or laughing hysterically.
You can't really take the story seriously because, of course, it's a joke, but the story has a beginning, middle, and end and actually is pretty sad if you think about it from the guy's POV... if you have three minutes to kill, read the manga and think really hard about the ending, and decide for yourself if it's a drama, comedy, or both.