Definitely "Feeding the lamb" and right after that this Gintama dj:
http://www.mangago.me/read-manga/gintama_dj_wakagaeri_hen/
It contains an adult fucking a child sooo yeah (=・ω・=) never reading that shit again. Also there was another Gintama dj from Harada as well and it involved forced imprisonment, rape and stockholm syndrome.
Also I j...... reply
