Basically this is from chapter 7.
[Master you can't unlock to origin vampire directly.
You unlocking to an ordinary bloodline is a good start. Here is the Vampire Linage Start to Bottom.
1.Origin
2.Ancestry
3.Supreme
4.Prime
5.Secundus(Secondary)
6.Overlord
7.King
8.Metamorphic
9.Evolved
10.True
11.ordinary
12.minor
13.All lineages have three stages.
Minor vampires are vampires who are afraid of sunlight and garlic and holy light. Those minor vampires are vampires from the movies that master have watched "Blade", "Vampires from Twilight movies" and "vampires from Hellsing".
But "pillarmen from JoJo are minor vampires at the third stage and Kars ascended from minor vampire to True vampire skipping ordinary lineage with the help of an external object. Alucard Hellsing was also able to unlock a peak third stage True Vampire linage.
Ascending 1 stage can increase your stats but ascending a lineage can double or more to your stats.
Ordinary vampires have no weakness but only have normal longevity. But Master is different. You already have the origin bloodline. You are just not strong enough to unlock the bloodline. So you already have indefinite longevity with no weaknesses and can turn a person to a minor vampire or ancestry vampire.
Although you can make someone whether a minor vampire or an ancestry vampire and make them have indefinite longevity with no weakness but since you can't unlock the origin bloodline, they also can't unlock their strength. Because the ALPHA(in this case Master who turned them into vampires) didn't unlock enough lineage. So this means if now Master turns someone into an ancestry vampire, they will only have a minor strength but with no weakness and with indefinite longevity.
If you could ascend to True Vampire, your vampire partner will also be able to unlock his strength equal to an ordinary vampire.
(A/U I am sorry this is kind of info dump.
Summary
You just need to know that
MC can't unlock lineage only because of his strength but MC can make a person a minor or ancestry with indefinite longevity with no weakness whether he is minor or ancestry.
And they will always be one lineage lower than MC.
MC ascend one lineage, they ascend one.
One lineage ascension can double or more of your stats.
Ascending stages can also increase your stats.)