Mangasss

There is literally a manga called brother x brother you know ╮(￣▽￣)╭

I have list that contains all kinds incest.
http://www.mangago.zone/home/mangalist/213/
I ever picked out only bros for someone somewhere before.. (￣∇￣")

Brother X Brother, Brother by Ougi Yusuha, Yaizu Brothers, Otouto n Koi Shitara, Kyoudai-biyori, are just a few.
;)

i know people have lists for this.

Found - Sibling/ Blood Related Bros
http://www.mangago.zone/read-manga/the_inheritance_of_aroma/
http://www.mangago.zone/read-manga/uso_to_kiss/
http://www.mangago.zone/read-manga/concrete_garden/
http://www.mangago.zone/read-manga/double_face/
http://www.mangago.zone/read-manga/nibiiro_no_hana_gou/
http://www.mangago.zone/read-manga/mitsubana/
http://www.mangago.zone/read-manga/yaizu_brothers/
http://www.mangago.zone/read-manga/nekoka_danshi_no_shitsukekata/
http://www.mangago.zone/read-manga/ienai_itami_o_daite_iru/
http://www.mangago.zone/read-manga/teirui_makura/
http://www.mangago.zone/read-manga/fuson_na_hana_o_aisureba/
http://www.mangago.zone/read-manga/yuukyuu_no_kanata/bt/37282/Ch0
http://www.mangago.zone/read-manga/miruku/
http://www.mangago.zone/read-manga/koushaku_no_himeta_kuchizuke/
http://www.mangago.zone/read-manga/wana_wana_kiss/
http://www.mangago.zone/read-manga/sentimental_garden_lover/
http://www.mangago.zone/read-manga/ushiro_no_shounen_darling/
http://www.mangago.zone/read-manga/haikei_niisan_sama/
http://www.mangago.zone/read-manga/ezakike_e_youkoso/
http://www.mangago.zone/read-manga/sawatte_tokashite/
http://www.mangago.zone/read-manga/koiyami_archive/ - Twincest
http://www.mangago.zone/read-manga/ani_no_chuukoku/
http://www.mangago.zone/read-manga/ai_no_dna/
http://www.mangago.zone/read-manga/loop_so_sol/