Hi ! Can you help me find this yaoi please ? I don't remember much, All I can describe is ...

i saw this on youtube!!! its a one shot thats all i can offer....sorry...

http://www.mangago.zone/read-manga/kusari_ni_kiss/
try this one, but not sure if it is

Is it:

http://www.mangago.zone/read-manga/oresama_wo_kurae/

author: chitose piyoko

Unfortnarly that's not them.. Anyway, thanks a lot :)

is it:

http://www.mangago.zone/read-manga/jail_bird/

thanks :) but iit wasn't the one neither

Well... what about this one:

http://www.mangago.zone/read-manga/kokuin/

If not that one try looking:

http://www.mangago.zone/tag/kidnapping

nope... And I went through this tag, as well as captive/captivity/confinement
I am looking at every tag that could have been used ^^ I don't even know how many yaois I've read looking for this one.. That is so frustrating!
Well, I'll keep looking for it, anyway. I'm certain I have read it on mangago, so it must be here, somewhere! It have to !!
If you can think of/find any other name, hint, ideas... ^^

Here is a list you can search through, don't know if it will help or not:

This is one of Blue's list: http://www.mangago.zone/home/mangalist/20103/

This might be worth going through, hope it helps.

This is one Scarecrow's list: http://www.mangago.zone/home/mangalist/44087/

I can't believe this, I know the exact manga you are referring to because I'm searching for it and was thinking about making a post like this. Did you by any chance, read this on myreadingmanga like around 2015-2016? You might be a lttle behind that time considering you made this post on 2016. I know this is old but I want to add up my own memory; this was a doujinshi, what striked me odd about was when I searched it back then I found out it was a theater of some sort. No matter how hard I searched about the origin of the dj - because I wanted to read the real source of it - I only came across the theater. Unfortunately; this is all I got. The rest is basically same as yours; there was a top who had syringes. I also remember a cover with syringes but I could be wrong about this. I know this is old but I hope someone can still help.