There was this manga that I read a few years ago about a boy who grew up in a rich/famous family. He always get compared to his family because he's "too ordinary". If I'm not wrong, people even suspected him to be adopted because he doesn't resemble his family. Everyone in his family is gorgeous, tall, and talented. But unlike them, MC is not bad looking (but not gorgeous either), he's short too, on top of it he doesn't seems to have any special talent. The manga is pretty much about him being an odd one in his family.

Btw it's set in modern world and the MC is still in middle school (maybe high school, I doubt it tho). His name is either Hikaru or Kaoru, or anything that ends with "ru". At the end of the manga, it's revealed that the MC is just a late bloomer. He hit his growth spurt in high school and became cooler (this part is only mentioned briefly at the end).

Oh yeah, his family consist of his father, mother, sister, and brother (i don't remember his siblings age or how many siblings he had). I would be super thankful if anyone could find this manga ^-^

Family Complex?

http://i.imgur.com/LxhWm.jpg (will reformat this some day…)

Yeah, that's it. Thank you so much! It seemed i got some of the details wrong, I'm glad that you're still able to find it ^^