http://www.mangago.zone/read-manga/flawless/ - he's blind haven't read it tho
http://www.mangago.zone/read-manga/koe_no_katachi/ - you have probs seen the anime but I prefer the manga personally
http://www.mangago.zone/read-manga/nanohana_boys/ - this isn't a romance/BL/hetero, its about friendship between a deaf boy and partially blind guy, nonetheless it is worth the try
How I found it in july - For some reason, I cannot link it but it is available on mangago. There is no disability but the main character has terminal cancer
http://www.mangago.zone/read-manga/yubisaki_to_renren/ - deaf girl
Anyone know any heartwarming straight romance manga where one or both of the lovers have a disability? Kinda like,'Can't see, can't hear but love'