We're getting there xd
So it's clear by now that the style is Ninjutsu + Empowered Fuuinjutsu. lets get into the how's. You understand already that you are making living techniques. Yin-Yang is used through and through, in additions to creating the spiritual beings. These being's fuuinjutsu is based on Yin-Yang release as well. They seal and unseal primarily (but not necessarily) by converting Yang to Yin and Yin to Yang respectively, the same way izanagi functions. So essentially, something or someone sealed by these spirits is converted to Spiritual energy, and that spiritual energy wont just vanish (-cough- ahm might just -cough-). It'll be a part of us, which brings us to our interactions, and the similarities you see with what a Bijuu's seal looks like.
With that understood, let's get to why this portion of sealing is separate. i feared a risk again't Yin release techniques including Yamanaka, Genjutsu (or other techniques that affect spirituality) and malicious forms of chakra like Nekura Keigoku. Affecting the user's ability maintain control of whats sealed. With that in mind, part of the style involved separating a part of your consciousness. And then placing a mental block on it (like how Nagato did on his paths), essentially making a spiritual locker room. But as LoK defines it, it may as well be a personal dimension.
That's the space everything goes to, with this addition the style gives you the ability to seal anything without a medium. And you don't need to worry about absorbing something like Keigoku. Because you can passively change all your seals to function this way without needing to create spirits. It empowers all your fuuinjutsu as well because 1) everything inside your mind is your turf, any being there would be handicapped. Nothing escapes. 2) You're not sealing anything regularly, you're converting them to spiritual energy. This makes the seal more powerful and sealing stuff easier.
But you wont expect people to understand this rationale of thinking, even you might question it. So simple translation is, it bumps the rank of your fuinjutsu by 1.
First technique: Yes, it is capable of sealing Genki. But i had no idea, someone was gonna make a clan of that sorts. If i knew, i would've made it so that somehow Genki were safe or weren't as simple to seal. I wouldn't personally use it like that. But how you and LoK use it is entirely up to you guys.
@Keigoku, it might be Yin related. But its not a spiritual being or a ritualistic technique. The purpose of the technique is to correct, something that shouldn't be the way it is. Impure world Resurrection for instance brings souls from the pure world back to impure one. Those souls don't belong here, and Ronin would take them back. Ability to combat keigoku would mean, it also possess the ability to combat extensive genjutsu, that would just be misuse of this ability. In any case, you wouldn't wish to use it on techniques like Keigoku when you can use Shiranui.
Second Technique: Yeap, anything bar living things. Genki would still not be sealed because they're living creatures.
Questions?