I ever came across quite many but never though someone would like till ask for it. HA+
http://www.mangago.me/read-manga/otokonoko_no_koto_wa_nani_mo_shiranai/mf/6f3b55dc04824aa97e0e21f1965a25bb_chapter-5/pg-1/
http://www.mangago.me/read-manga/kichiku_encount/ - When the Uke's sick in Ch.3
http://www.mangago.me/read-manga/toshigoro_no_otokonoko_to_are/
http://www.mangago.me/read-manga/suki_dakara_itte_hoshikunai/ ch2
http://www.mangago.me/read-manga/kichiku_encount/
http://www.mangago.me/read-manga/tonari_ni_sunderu_neko_no_koto/
http://www.mangago.me/read-manga/retsujou/
http://www.mangago.me/read-manga/kyoushi_mo_iroiro_aruwakede/
http://www.mangago.me/read-manga/tadaima_shugyouchuu/
need rec for mangas that has sumata (non penetration/between legs sex) scene, thanks! (๑❛ᴗ❛๑)/