I'm the First Vampire

Colin, who came through, found that he seemed to fit the characteristics of the blood clan. But the problem is, there is no record of blood race in this different world!
Am I the first blood race in this world?
There is no senior guidance, and no system to help. In order to figure out the setting of the blood race in this world, Colin had to use himself as an experimental subject.
Under direct sunlight, the strength is reduced by about 30%]
The throat, heart, and brain are no longer the Achilles heel]
Ordinary food cannot satisfy hunger, only blood can restore physical strength]
Holy water... eh? Who gave me holy water! ! ! 】
This is the story of an atypical vampire...