EternalStar1
Honestly blood manipulation would be his greater choise for a vampire skill set(helps him gathering the blood of his victims the system made it clear that to rank up he would need a great quantity of blood so it could be weird if he kills a large number of enemeis like in the thousands and collecting the blood by himself, if not now then when he ranks up later). Shadow manipulation is fine tho it is not Shadow monorach ability it's just Shadow manipulation, Shadow monorach is a mix between Shadow manipulation and necromancy, so l don't see him devolpeing necromancy. Any way a great story till now, thx for the Chapter's. (it could be great if you could lengthen the Chapter)
First of all blood manipulation is honestly a Vampire specialty but unlike what someone else commented Shadow manipulation is honestly better suited for a a vampire not only because their creatures of the night but also because shadow manipulation is perfect for stealth, traveling( yes I'm being dead serious), attacking(mainly assassination tbh), and for monitoring via well shadows.
I think shadow mnipulation is better at least from the description of the skills, because shadow skill not mentioning the ones someone else mentioned it gives you ability to travel to shadow realm( i have read where vampires have this ability in one novel it was cool) . The blood Control would be better if you can use it the same way like in noblesse and the concept of making weapons is okay i just Hope they will not dissapear after being strenghtened by a lot of blood. Atmokinesis is the worst one because i dont feel the need of this ability and like with storm in X-Men it doesnt feel powerful and also it cannot be used in space or some realms.