What surprised Roy the most though was their function inside his body. After a bit of rummaging with them, he was able to find out their function.
The function of the first extra particle was easy to understand, as it added to his vitality increasing his lifespan, regeneration, and his blood activity.
While the second extra particle was a bit more special, and even more startling, as it increased his presence. What he meant by presence was his intents, and auras, like his killing intent, or his ruler's aura.
The changes were extremely small at the moment, in fact, they were minute. If Roy hadn't already opened his sense area, then it would be impossible for him to notice.
But he wasn't worried or disappointed by that because until now he had only just started to attract the first traces of these particles.