help! a yaoi that revolves around a motherless family. all the family members except the f...

help! a yaoi that revolves around a motherless family. all the family members except the females have a story. the father is a designer, and i believe he was paired with his secretary. his eldest son stays at home as a stand in mother. the son smokes and used to model in all white clothing. there are twins who have dark hair and one older brother. thats all i remember. thanks in advance. :)(≧∀≦)