being-you's manga / #4 brothers(1)

The story of 4 brothers whose parents died 7 years ago....The oldest brother's co-worker, Akiyoshi-san, is a great older beauty..... Hokuto, the baby of the family who is a middle-schooler, who fell in love with him at first sight, isn't going to give up until he makes this big man fall for him! On the other hand the second son, Nishiya, is being moved both body and soul by Hokuto's homeroome teacher, Fuyuno-sensei...then remains the third son who is ignorant to his best friend's feelings towards him... Pairings- eldest bro(Tougo) X restaurant owner(shuntarou) 2nd bro Nishiya(20) X homeroom teacher Fuyuno-sensei(widow with a girl/43) of the smallest bro 3rd bro (Namiki) X his friend 4th bro( Hokuto) X his eldest bro's co-worker