Looking for some Yaoi manga

So ages ago I read a manga and I'm not even sure what platform I read it on. To be completely honest I'm pretty sure it's called sentient cocks, or something simple but it's about these boys who where cocks for each other if you understand. And the onky scene I remember was that one of them was in a coma of something and the uke herd that to change the guy from the coma who was also his cock at the current time was to fuck the unconscious guy, like ride him. Anyway I found it from a video I watched a while back that also contained color recipe. If someone finds It I'll be delighted.ヾ(☆▽☆)