This is a suuuper similar story: http://www.mangago.me/read-manga/ouji_to_kotori/
I feel weird too I remember like the seme has a brother and the brother has a uke or something like that then something went happen like the uke need to go some place which very far and dangerous in order to save the seme something like that @.@ .... Whr is it I trying to find it but then is like it just gone :(
I feel as if I've read this before, but that there's more too it..... Like the evil uncle captured Nozomu or something..... Does anyone else feel this way?