What Is a Gene-Seed?
A gene-seed is the special DNA taken from the Emperor of Mankind Or The Primarch, used to create Space Marines or adeptus astartes. It's the genetic blueprint, to be able to make of 19 special organs that are surgically implanted into a human to make them superhuman.
What is the grey knights?
The Grey Knights are elite daemon-hunters, created with the Emperor's purest gene-seed, making them the most powerful and incorruptible of all Space Marines. They are warrior-psykers trained from childhood, able to fight the worst horrors of the galaxy without falling.
The Gene-Seed, I created are different from the normal one on Warhammer, Because this is on The Naruto World, there are no Imperium, Or high technology, So The Gene Seed I created carries the memories of it's predecessors. It means the Gene-Seed I created,will have 10,000 Years of Memories of the grey knights, it will have combat experiences of fighting daemons, heretic,and such. Apothecaries of grey knights, you will know the knowledge of creation of the organs of the space marine, the 19 surgical implants, and too the primaries implants totaling of 21 implants.
Tech astartes, it will carry the memories of the knowledge of tech astartes, know of high technology and such be able to make your own armors.
The grey knights, knowledge of the warp and use of psychic abilities.
And many skills, since the grey knights are superhuman, they all have kinds of skills, from swordsmanship, assassin techniques, breathing, meditation. And many unusual skills.
found some comments of asking why h still needs to learn knowledge, won't he learn it, when he implants the Geneseed, okay first of, the Geneseed are in his mental space, it's like a gift, hidden there, like in a storage space, but once he take it out, he won't be able to put it back, now that's too dangerous, that's his gift after all, second Gene Seed are like organs, you need to learn biology, surgeries, and knowledge to be able to implant that safely in his chest, you can't just swallow the gene seed right? Hahaha. Third Hajime don't know that Gene seed carries the memories of its predecessors, so his pretty much focus on learning knowledge.