http://www.mangago.me/home/mangalist/43014/ Haven't added to it in awhile but it's what I got!
http://www.mangago.me/read-manga/hetalia_dj_meine_liebe/
I just read it and it should sate you, unless you're like me and need all these:
http://myreadingmanga.info/?s=germany+x+prussia
Happy readingヾ(❀╹◡╹)ﾉ~
Thankyou ლ(´ڡ`ლ)
Thank you ヾ(☆▽☆)
http://www.mangago.me/read-manga/kusatta_rasen/ father x son
http://www.mangago.me/read-manga/ibitsu_no_kakera/ brother x brother
http://www.mangago.me/read-manga/not_equal/ father x son
http://www.mangago.me/read-manga/ai_o_kou_kemono/ brother x brother +father x son
http://www.mangago.me/read-manga/mayonaka_no_oyatsu/ uncle x nephew
http://www.mangago.me/read-manga/ienai_itami_o_daite_iru/ brother x brother
http://www.mangago.me/read-manga/fuson_na_hana_o_aisureba/ brother x brother
http://www.mangago.me/read-manga/kyoudai_no_rule/ brother x brother
http://www.mangago.me/read-manga/nanadome_no_gomenne/ twin brother
http://www.mangago.me/read-manga/samenai_yume/ twin brother
http://www.mangago.me/read-manga/the_inheritance_of_aroma/ brother x brother + son x father
http://www.mangago.me/read-manga/haikei_niisan_sama/ brother x brother
http://www.mangago.me/read-manga/futari_no_musuko_ni_nerawarete_imasu/ twin x foster father
http://www.mangago.me/read-manga/yami_bl/bt/239155/Vol1_Ch3/twin brother
if you like incest and dark manga with psychological plot you will definetly like harada's sensei work http://mangapark.me/search?autart=Harada and http://mangapark.me/search?autart=ogawa%20chise and http://www.mangago.me/r/l_search/?name=Tamaquis%20Wren
WOW . THANK YOU ヾ(☆▽☆)
I NEED INCEST FOR GOD SAKE . BRING TO ME (╯°Д °)╯╧╧