Responses
F.s
not exactly but...
http://www.mangago.zone/read-manga/ouji_hiroimashita/
this kinda fits but it isnt very romantic (uke is prostitute)
http://www.mangago.zone/read-manga/kimi_no_ondo/
this is also like your wish but its more complicated
http://www.mangago.zone/read-manga/castle_mango/
Uke working hard for his brothers and seme after meeting uke and falling in love with him decides to support uke
Or the other way
Seme working hard for his brothers and uke after meeting seme and falling in love with him decides to support seme