rivals/ enemies:
http://www.mangago.me/read-manga/versus_x_lovers/
http://www.mangago.me/read-manga/sailor_danshi/tr/97949/page/55/
http://www.mangago.me/read-manga/harenchi_no_susume/
http://www.mangago.me/read-manga/aisaretaino/
http://www.mangago.me/read-manga/sunao_ni_narenai_otokotachi/
http://www.mangago.me/read-manga/like_the_barren_wasteland/
http://www.mangago.me/read-manga/parallel_lines/
http://www.mangago.me/read-manga/koi_wa_ichiya_ni_shite_narazu/
http://www.mangago.me/read-manga/koi_nante_shinai/
http://www.mangago.me/read-manga/chuuken_kunshu/mr/chuuken-kunshu/5/7/
http://www.mangago.me/read-manga/kowarekake_no_omocha/mf/v01/c006/2/
http://www.mangago.me/read-manga/you_re_my_loveprize_in_viewfinder/
http://www.mangago.me/read-manga/renai_kyoutei_nukegake_nashi/
http://www.mangago.me/read-manga/kirai_kiraimo/
http://www.mangago.me/read-manga/black_sun/ ongoing
http://www.mangago.me/read-manga/kiken_na_otonarisan/
A yaoi manga like Junketsu Drop :)
Please and Thanks (=・ω・=)