User blog comment:12th Supernova/Chapter 781: Doctor of Death/@comment-3986064-20150327111232

I'm really curious if Law used something so incredible as using his room on the sounds he emitted to whisper them straight into Luffy's ears...

I would say that it is overpowered, but seeing some of Law's techniques and even Doffy's now, it feels completely plausible...

And when I think about the fact that Doffy even made dolls of himself out of string... I guess organs stichted together would work too.