Kinda odd that the only yaoi i read about voice fetishism was this one. Seems to me that this fetish is not that uncommon. Voices are naturally sexy. Some people can make even science textbooks sound erotic ;-)
scuse me! let me put this REALLY GOOD MANHWA here ;^)))) http://www.mangago.zone/read-manga/sign_language/
Kikoeru by hashimoto aoi, beautiful art and voice fetish for a radio host's voice
http://www.mangago.zone/read-manga/kikoeru/
I like how they talked about the issue of broken trust in that last chapter. What Kou said "I assure you that I will make you trust me"....that at least shows his resolve. After all, trust is such a complex issue...it should never be automatic or on faith...it is earned. I wish there were more chapters with Kou being sickeningly lovey-dovey lol