Responses
http://www.mangago.me/read-manga/home_drama/
http://www.mangago.me/read-manga/passion_fruit_no_kaori_tsuki/
http://www.mangago.me/read-manga/tone/
http://www.mangago.me/read-manga/aikotoba_wa_hallelujah/
http://www.mangago.me/read-manga/ai_no_gebokutachi/
http://www.mangago.me/read-manga/brother_x_brother/

Hey! Lately I've been into yaoi mangas with family-themed stories. Fell in love with them ever since Sannin Gurashi, Bokura no Negai, and Sugano Akira's works. Can't get enough of them!(≧∀≦)
Anyway I think I've read most of the good ones but who knows if there's a hidden, unexplored gem? So yeah if you happen to know any family-themed yaoi manga please tell me! Preferably ones with kinda long stories, but beggars can't be choosers.
Have a great day!