I bet you know them all already:
http://www.mangago.zone/read-manga/double_face/
http://www.mangago.zone/read-manga/fuson_na_hana_o_aisureba/
http://www.mangago.zone/read-manga/kyoudai_biyori/
http://www.mangago.zone/read-manga/toshishita_no_ryuugi/
http://www.mangago.zone/read-manga/bamford_koushakuke_no_shitsuji/ (ch.5)
http://www.mangago.zone/read-manga/brothers_yamamoto_kotetsuko/
http://www.mangago.zone/read-manga/ai_o_kou_kemono/
http://www.mangago.zone/read-manga/uso_to_kiss/
http://www.mangago.zone/read-manga/otouto_ja_irarenai/
http://www.mangago.zone/read-manga/brother_x_brother/
http://www.mangago.zone/read-manga/ichiban_chikaku_de_koi_o_suru/
http://www.mangago.zone/read-manga/aka_no_ori/
http://www.mangago.zone/read-manga/bomb_heaven/
http://www.mangago.zone/read-manga/ani_no_chuukoku/
http://www.mangago.zone/read-manga/yami_bl/
http://www.mangago.zone/read-manga/hakoiri_musuko/
http://www.mangago.zone/read-manga/familiar/
http://www.mangago.zone/read-manga/honeycomb_child/
http://www.mangago.zone/read-manga/homura_uzuki_jun/
http://www.mangago.zone/read-manga/teirui_makura/
http://www.mangago.zone/read-manga/kekkon_zenya/
http://www.mangago.zone/read-manga/ibitsu_no_kakera/
http://www.mangago.zone/read-manga/samenai_yume/
I need more brotherxbrother stuff
Gimme some please