«[]»Sex in Bathroom/Restroom scene
http://www.mangago.zone/read-manga/feng_yu_jiu_tian/ - Ch. 4 Bath Dream/Time
http://www.mangago.zone/read-manga/17_sai_no_hisoka_na_yokujou/
http://www.mangago.zone/read-manga/shinshi_to_norainu/
http://www.mangago.zone/read-manga/kuroneko_kareshi_no_amaekata/ Ch.5.5
http://www.mangago.zone/read-manga/uso_mitai_na_hanashi_desu_ga_h/
http://www.mangago.zone/read-manga/beast_feast/ Ch.2
http://www.mangago.zone/read-manga/tatsu_no_otoshigo/
http://www.mangago.zone/read-manga/shin_toukyou_yuukaku_monogatari/
http://www.mangago.zone/read-manga/miruku/ - Sexiest nipple scene
http://www.mangago.zone/read-manga/kuroshitsuji_dj_bathroom/
http://www.mangago.zone/read-manga/kimi_ga_koi_ni_midareru/ - Ch.6
http://www.mangago.zone/read-manga/toshishita_no_ryuugi/ Ch.6-7
http://www.mangago.zone/read-manga/tell_me_the_price_of_love/
http://www.mangago.zone/read-manga/i_nome_della_rosa/
http://www.mangago.zone/read-manga/uso_mitai_na_hanashi_desu_ga_h/
http://www.mangago.zone/read-manga/koibito_wa_hatsujouki/ - Ch.3 Train / Restroom stall
http://www.mangago.zone/read-manga/kichiku_encount/ - Restroom stall
http://www.mangago.zone/read-manga/kanga_na_spoon/ - Restroom stall
http://www.mangago.zone/read-manga/gokudou_darling/ - BJ Restroom stall
http://www.mangago.zone/read-manga/hua_hua_you_long/- Ch.7?
http://www.mangago.zone/read-manga/shortcut_love/
http://www.mangago.zone/read-manga/naruto_dj_shinobi_icha_ero/
http://www.mangago.zone/read-manga/hyper_love_power/an/hyper-love-power-chapter-4.html/1/
http://www.mangago.zone/read-manga/kuroneko_kareshi_no_afurekata/ - Hot Spring/Onsen
http://www.mangago.zone/read-manga/himitsu_no_kuchizuke/an/himitsu-no-kuchizuke-chapter-4.html - Hot Spring/Onsen
http://www.mangago.zone/read-manga/kouun_no_rihatsushi/mh/c006/18/
http://www.mangago.zone/read-manga/i_m_not_your_stepping_stone/ (it's a series but the bathroom sex comes in ch.4)
Does anyone know of some bl yaoi that has bathroom sex?