Any yaoi manga where uke was raped by seme and ukes ass bled
http://www.mangago.zone/read-manga/hyakujitsu_no_bara/ there's a part like that in the story
http://www.mangago.zone/read-manga/hyakujitsu_no_bara/
http://www.mangago.zone/read-manga/chii_chan_and_eno_kun/
Any yaoi manga where uke was raped by seme and ukes ass bled