Obere Hohlvene

 (霊楯輪 (オーベル・ホールヴェーネ), Ōberu Hōruvēne; German for "Superior Vena Cava", Japanese for "Spirit Ring Shield") is a unique Quincy technique, utilized by Zetto.

Description
Instead of concentrating his reishi-infused blood in a specific area of his body, Zetto absorbs an enormous amount of reishi and covers his entire Blut Vene system with them, allowing him to gain an almost indestructible defense, requiring a strong and stable Bankai to destroy it. However, he can only use it for five seconds and has quite the drawback, as he needs to wait a few minutes to reuse it. While using Obere Hohlvene, Zetto gains a blue and white aura, with a color similar to the blue flames Quincy can produce. This is an upgraded version of Blut Vene.