The moment Leonard Ethan saw the [Blood Manipulation (SR)] card, he felt that all his previous efforts were worth it. Even if the subsequent novels were not as good as he imagined, it didn't matter because the value of this card was simply too great.
At the same time, the effects of the card were undoubtedly diverse, as it could be used for both saving and attacking. If used to save people, it could either change the blood state to quickly clot the wound or output blood to stabilize the injured person's condition.
As for using the skill to attack, it could either instantly vaporize 1000cc of blood in the target's body and cause them to explode, or merely mobilize less than a milliliter of blood in the brainstem or vascular area to become solid and block the blood vessels, both of which would have a strong lethality.
