Responses
I gotchu i think
http://www.mangago.me/read-manga/bokura_no_negai/
It might not be that one sorry
Thank you but It's not this time one. (=・ω・=)
I read this ages ago and I remember from it is that a lovestory of all the brothers. Like in one manga (or maybe a series), tackles the story of the adopted brother x another brother. Next, story of the second brother and so on.
I got worried about it, like who will continue their bloodline if all them have male partners. Well, luckily the eldest brother (also got a male partner too) have twins(?) to continue their bloodline but this twins too are gay.
I know it's somehow confusing but that's all I remember. The whole family is gay and all of them have male partner.