Help meee plss

plss help me find the manga genre: yaoi so I forgot the story but the cover is them and the seme is have ears of beast; the story that I can remember is that there is a rare disease that cause human to became a beast so the seme had it and as the story goes whenever they do it he always say "bear my child" or something like that and so the uke then became obsessed on how he can get the disease because in some cases the couple who have same gender had an offspring because of the disease and this is what I left outttttt I need to find this oneeeee Pls welp Mee this is manga btw