http://www.mangago.zone/read-manga/doutei_doudeshou/
http://www.mangago.zone/read-manga/the_last_lover/
http://www.mangago.zone/read-manga/otokokemono_desu/
http://www.mangago.zone/read-manga/tsuki_ni_hoero/
http://www.mangago.zone/read-manga/porno_superstar/
http://www.mangago.zone/read-manga/tsuyameku_hishatai/
http://www.mangago.zone/read-manga/rikugun_renai_shikan_gakkou/
http://www.mangago.zone/read-manga/cut/
http://www.mangago.zone/read-manga/critical_lovers/
http://www.mangago.zone/read-manga/renai_moratorium/
http://www.mangago.zone/read-manga/darenimo_iwanaide/
http://www.mangago.zone/read-manga/renai_zemi/
http://www.mangago.zone/read-manga/kaihatsu_muramura_mode/
http://www.mangago.zone/read-manga/kimi_to_kore_kara/
http://www.mangago.zone/read-manga/tsuki_no_ookamiotoko/
http://www.mangago.zone/read-manga/kodomo_no_iibun/
http://www.mangago.zone/read-manga/kono_ore_ga_omae_nanka_suki_na_wakenai/
http://www.mangago.zone/read-manga/ikezu_kareshi_no_otoshikata/
http://www.mangago.zone/read-manga/chikan_diary/
http://www.mangago.zone/read-manga/ren_ai_shinan/
http://www.mangago.zone/read-manga/koi_ni_nare/
http://www.mangago.zone/read-manga/lucky_number_13/
http://www.mangago.zone/read-manga/mobile_sweet_honey/
http://www.mangago.zone/read-manga/oni_ni_hatsujou/
You mean virgins or totally clueless when it comes to sex?
Virgins
http://www.mangago.zone/read-manga/porno_superstar/
http://www.mangago.zone/read-manga/ren_ai_shinan/ (virgin seme)
http://www.mangago.zone/read-manga/koi_ni_nare/
http://www.mangago.zone/read-manga/ikezu_kareshi_no_otoshikata/
http://www.mangago.zone/read-manga/critical_lovers/
http://www.mangago.zone/read-manga/soredemo_kamawanai/
http://www.mangago.zone/read-manga/love_lesson_chidori_peko/
http://www.mangago.zone/read-manga/doutei_doudeshou/
http://www.mangago.zone/read-manga/renai_moratorium/
http://www.mangago.zone/read-manga/umi_no_juunin_to_wa_koi_wa_shinai/
Completely clueless
http://www.mangago.zone/read-manga/tatsu_no_otoshigo/
http://www.mangago.zone/read-manga/chikan_diary/
http://www.mangago.zone/read-manga/renai_zemi/
I should've checked the main page before posting ;_; sorry for that
Don't worry! Its nice that we all try to help and every suggestion is welcome :D I'm not bothered at all :)
Any yaoi manga where the main characters have no sexual experience whatsoever?