its a yaoi manga, where the boy went to the prestige school because he was interested with the girl school uniform.. there he met the famous guy who's interest in him.... the boy was the first son where he live with his brothers and father.. their mother was passed away when she give births the twins...
if i'm not mistaken...
Is this what you're looking for??
http://www.mangago.zone/read-manga/saa_koi_ni_ochitamae/
that was so damn cute. .