http://www.mangago.me/read-manga/hitori_to_hitori_no_3650nichi/ was the first one I thought of. I remember the ML being very kind and patient
i don't have much (TW!!) r*pe manga/hwa/hua for you but i have a few that deals with trauma
http://www.mangago.me/read-manga/kiraide_isasete/ (r*pe)
http://www.mangago.me/read-manga/nights_before_night/
http://www.mangago.me/read-manga/jazz_for_two/
http://www.mangago.me/read-manga/a_shoulder_to_cry_on/
http://www.mangago.me/read-manga/geu_kkeute_issneun_geos/ (r*pe)
http://www.mangago.me/read-manga/saezuru_tori_wa_habatakanai/ (r*pe)
Mangas (yaoi and shounen ai) where the mc is traumatized from being raped and the love interest helps him through it. Where him learning to cope is a good chunk of the story and isn't one of those "I'll override those memories with my dick" things. I will also accept anything else involving trauma as long as it's not all resolved in just the first chapter and everyone forgets it was even a thing. Preferably where the mc is the short one in the relationship.