Board Thread:Naruto Discussions/@comment-26190972-20151021201438/@comment-27074627-20151021201938

It's been asked, but Yamato didn't specify to which of this natures (Yin/Yanf) Medical Ninjutsu actually belongs, so we have no facts. Genjutsu was clearly named as Yin Release branch of jutsu by the Second Mizukage.