[@RyoRyoRyoken]That's what the Kekkei Genkai does though, since Jugo's clan can passively take in nature chakra. It's the source of their transformative power and their crazy bloodlust. It's not the same as Sage mode because it can't be properly controlled, which makes it closer to the Curse seals that spawned from it.

Edit: That being said, if it's not possible on any level with you guys, then I can drop it and just run with Shizuka