I m looking for the name of a Doujinshi/Hentai where the main guy is a vampire but he is challenging, opposing and fighting against a large group/organisation of vampires. The protagonist is accompanied by a girl who he has sex with and dinks blood from, and the girl apears to be older than him. Along the way they meet another girl who lost her singing voice and falls in love with the protagonist.

Well, I know my desciption isnt that helpful but that's as far as I can remember of the story, because I read parts of it quite a while before and this is all the inf I can remember. So I would really appreciate it if someone can provide the name for me.

Thanks

Yes that's the one I was looking for. Thanks alot for your help , really appreciate it