This is really embarrassing but can anyone recommend yaoi gang rape or yaoi rape mangas?

Hogu Hagyeongsu , is for Yah HAHAHAHA!!

Rape : http://www.mangago.zone/tag/Rape/

A man of culture I see?

Definitely Hogu Hagyeongsu/An Easy Target...it's like 90% rape.

Well lets get the most mainstream one out of the way: http://www.mangago.zone/read-manga/gamushara_mob_rape_2_chikan_jigoku_hen_kuroko_no_basuke_dj/

http://www.mangago.zone/read-manga/aru_otoko_no_higeki/
http://www.mangago.zone/read-manga/maki_chan_wa_kare_to_sex_shitai/
http://www.mangago.zone/read-manga/kyuuso_neko_o_kurau/
https://myreadingmanga.info/echo-echo-jiro-nanidameshi-eng/ (this one's only on mrm but its top tier)